Lantern chuck with quick release clamping to aid loading / unloading components

Hi All
I would firstly like to thank JR for posting his lantern chuck as this gave me lots to consider when designing and making my take on a lantern chuck.
I made this as I have some 60 plus copper rivets that need threading 2BA for a 3” scale Foden steam wagon copper boiler, I am currently making (well for the last 10 years)
As you can appreciate this could be a very time-consuming exercise, so I needed a chuck I could load and unload quickly. This is my take on a lantern chuck with quick release clamping, the photos show part of the build, to final fitting to the lathe. I have also included a video. (I am no Spielberg as you will see) From the video you will also see with a bit of practice I should be able to complete the batch quite quickly.
The aluminium handle fitted to the unit was purchased with the money I kindly received from Homemadetools.net for my claw clamp tool of the week.

Attachment 21750Attachment 21751Attachment 21752Attachment 21753Attachment 21754Attachment 21755Attachment 21756Attachment 21757Attachment 21758Attachment 21759Attachment 21760Attachment 21761Attachment 21762Attachment 21763

http://<a href="https://www.youtube....OtLsaNcWrU</a>


Thank you again to JR and to all who view
The Home Engineer

Very nicely done The spring loaded quick release is a great feature

Very well done,
the quick release will come in handy for threading all those rivets

Very nice. Your quick release brings your lantern tool into the Super Lantern Chuck category.
Well done improvement on a tool that has been around for a long time. I really like the use of the
collet closer to lock it down. Great tool.

Cheers, JR

Thank you JR for your post and kind words. It was seeing your post that got me thinking. I was going to bore some soft jaws but this is a far better solution. This will also be far more useful for other small screws etc. in the future.
The Home Engineer

Very clever indeed.

It took me a few minutes to puzzle out the mechanism. Your post would be very much improved by the addition of a written description of how the half-thread button works. It's not a commonly seen device and many folks will be as puzzled as I was initially.

Minor complaint aside, it's still a real improvement. While I don't use mine for as many pieces as you do, I still find the loading and unloading tedious. Improvements such as yours that make the tool easier to use ensure that it, rather than some crude bodge, will be used.

I need to know more about your die holder.

I like the Lantern chuck with quick release.

Ralph

I have been a fan of these devises for years and your idea brought my idea closer and I'll share it and maybe simplify the design for others.

I was looking to use the bar threaded in from the left of the spindle and the main body just like your. The lantern is a separate part that works similar to a V block clamp with the head like the lantern to hold all the buttons to hold different sizes of bolts. If the lantern part slides in a slot and a quarter turn to lock into the working position. The threaded rod would not need any quick release just enough of a turn to apply the pressure need to hold it. Then loosen the threaded rod turn the lantern and then pull the finished piece and insert new blank and repeat until finished.

Maybe someone can run with the ideas, I've tooo many on my short list. If I could get to the end of my long list I would be at least 150 years old.

Nelson

Hi Ralph
Thank you for your interest.
The item in question is a Coventry die head. These are similar to a die but made with 4 individual cutters known as Coventry die chasers. I will add a post on the die head if you would like to explain it in more detail.
The Home Engineer

Hi Nelson
Thank you for your interest.
I know what you mean about to many projects. I am currently designing a retractable internal threading tool holder, I plan to build a bead roller, (drawings almost complete) and have started collecting all bits required, a ring roller (which I have started). Toe jack. Wheel lift system to move machines around the shop (drawings finished material cut) as well as my 3” Foden steam wagon, and I have two other models ready for painting. I would like to build a stone crusher don’t need one, just like the idea and build out of interest. I am so far behind on my projects I don’t think I have time to die.
The Home Engineer

Amen to no time to die.

I have been working on my Workshop fo three years and it is not done yet, besides all of the projects
I occasionally work on instead finishing my workshop. My 12x36 lathe sat outside in a crate for the past year.

Re: Coventry die head, I'll google it but sure would like to know more.

Ralph

Hi Ralph
There will be plenty of info on the internet. A bit old school these were used a lot on capstan lathes high production. With the introduction of tip tooling and CNC they are seen less and less. CNC is the way forward but these still have a place in any manual operated workshop. If you shop around you can pick them up cheap due to this reason. The chasers are still available today again shop around and can be purchased cheaply. As I mentioned they are really a production tool but if you cut one size regular well worth the investment. The size of the Coventry die head shown in the video takes upto 6mm/ ¼” die range. Hence, they are known as ¼ Coventry die head as this is the maximum size it will cut or 6mm metric ¼ UNC, UNF, BSW, BSF, and up to 2BA and all sizes below the nominal size. Hope this helps

The home Engineer

Not cheap at all, >$100.00 for the cheapest ones on ebay.

Ralph

cant believe it just looked here (UK) and the price has shot up. Sorry for the wrong information.
The Home Engineer

Well I need to learn single point turning anyway, but for the smaller diameters it really looked interesting.

Ralph

Really a great improvement ! Nice and cleanly done, I vote for it !
Christophe

I have to share this with you Ralph.
It is my 50th birthday next month and my lovely partner has put a lot of money towards a Metric Ainjest for my Colchester 1800. It is quite sad, but I am so excited, as I collect it a week today (Friday). I feel like a kid at Christmas as I am counting the days down. Now these are not cheap but they enable you to screw cut at high speed. I have cut threads at 1200rpm at work with an Ainjest.

Take a look at the video I found on youtube.

https://www.youtube.com/watch?v=brAguvg88BU

Just had to share
The Home Engineer

<!-- BEGIN /var/www/html/homemadetools/protected/modules/zeus/views/tool/postUpdate.php -->
Thanks thehomeengineer! We've added your Lantern Chuck to our Workholding category,
as well as to your builder page: thehomeengineer's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="http://www.homemadetools.net/homemade-lantern-chuck-5"> <img src="/uploads/209580/homemade-lantern-chuck-5.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="http://www.homemadetools.net/homemade-lantern-chuck-5">Lantern Chuck</a> <span> by <a href="http://www.homemadetools.net/builder/thehomeengineer">thehomeengineer</a></span> </div> <div class="tags">tags: <a href='http://www.homemadetools.net/tag/rivet'>rivet</a>, <a href='http://www.homemadetools.net/tag/chuck'>chuck</a>, <a href='http://www.homemadetools.net/tag/threading'>threading</a> </div> </div> </div> </div>
<!-- END /var/www/html/homemadetools/protected/modules/zeus/views/tool/postUpdate.php -->

That is one super lantern chuck idea. Thanks for sharing!

Dick

I like your nice build of the lantern chuck. I understand how it works and see the benefits of having one. It would come in so handy. I am puzzled about two things though. What is the small hole in the main body end for? (unscrewing maybe?) I also noted a hex cap screw. What is it's purpose? I have done without one for way too long and I want to build for myself.

Dick

Quote:

---

Originally Posted by old_toolmaker

I like your nice build of the lantern chuck. I understand how it works and see the benefits of having one. It would come in so handy. I am puzzled about two things though. What is the small hole in the main body end for? (unscrewing maybe?) I also noted a hex cap screw. What is it's purpose? I have done without one for way too long and I want to build for myself.

Dick

---

Hi Dick
The hole is for a bar (3-jaw chuck key handle from lathe) to enable the chuck to be unscrewed from the nose spindle. The hex bolt in the end of the clamp has been machined to suit the dome head of the rivet. If it was flat I was concerned it could distort the soft copper rivet head. This bolt can be removed and other M6 screws can be modified to suit the head of other screws, bolts, rivets etc that need machining. Hope this is the bolt you mean if not please ask again.
Thank you for your interest again
The Home Engineer

Hi All
January 2018 I built this lantern chuck initially to make the copper stays for a model steam engine boiler I am building. Today some 8 years and a few months later they have been made. Not sure where the time has gone. There are 90 3/16” diameter x1” long rivets threaded 2BA.
The photo below shows the stays completed in a box. I have allowed another 8 years to make the 90 copper nuts :lol:
Attachment 50516
Thank you for viewing and your patience :rofl: