Forum sponsored by:

How to machine an ellipse

Search for: in Thread Title in

Michael Gilligan	19/07/2018 07:46:12
23121 forum posts 1360 photos	I've just found this page [with interactive diagrams] which describes the properties of an ellipse much better than I can: LINK https://www.mathsisfun.com/geometry/ellipse.html MichaelG.
Brian H	19/07/2018 10:19:24
2312 forum posts 112 photos	I've just dug out a book I have entitiled "Machine Construction and Drawing" that dates to around 1895 to 1900 judging by the sample City & Guilds exam questions and this shows that drawings for stuffing boxes and glands consist of a large circle around the rod and 2 smaller circles around the studs, joined by straight lines. The proportions of all the dimensions are derived from the diameter of the piston rod. I can copy the relevant pages if anyone is interested. Brian
JasonB	19/07/2018 10:28:57
25215 forum posts 3105 photos 1 articles	Muncaster also gives a table of suitable proportions for "oval" glands in his book. You will also find this in Westbury's series of articles that are dotted about on the web. Note he calls them oval and not elliptical. The straight edges ones don't see to be as common as the oval when you look at both full size and model.

<< First < Prev 1 2 3

All Topics | Latest Posts

Please login to post a reply.

Magazine Locator

Want the latest issue of Model Engineer or Model Engineers' Workshop? Use our magazine locator links to find your nearest stockist!

Find Model Engineer & Model Engineers' Workshop

You can unsubscribe at anytime. View our privacy policy at www.mortons.co.uk/privacy

Latest Forum Posts

*Oct 2023: FORUM MIGRATION TIMELINE*
05/10/2023 07:57:11
Making ER11 collet chuck
05/10/2023 07:56:24
What did you do today? 2023
05/10/2023 07:25:01
Orrery
05/10/2023 06:00:41
Wera hand-tools
05/10/2023 05:47:07
New member
05/10/2023 04:40:11
Problems with external pot on at1 vfd
05/10/2023 00:06:32
Drain plug
04/10/2023 23:36:17
digi phase converter for 10 machines.....
04/10/2023 23:13:48
Winter Storage Of Locomotives
04/10/2023 21:02:11
More Latest Posts...
View All Topics

Support Our Partners

Shopping Partners

Subscription Offer

Latest "For Sale" Ads

Reeves** - Rebuilt Royal Scot by Martin Evans
by John Broughton
£300.00
BRITANNIA 5" GAUGE James Perrier
by Jon Seabright 1
£2,500.00
Drill Grinder - for restoration
by Nigel Graham 2
£0.00
WARCO WM18 MILLING MACHINE
by Alex Chudley
£1,200.00
MYFORD SUPER 7 LATHE
by Alex Chudley
£2,000.00
More "For Sale" Ads...

Latest "Wanted" Ads

D1-3 backplate
by Michael Horley
Price Not Specified
fixed steady for a Colchester bantam mark1 800
by George Jervis
Price Not Specified
lbsc pansy
by JACK SIDEBOTHAM
Price Not Specified
Pratt Burnerd multifit chuck key.
by Tim Riome
Price Not Specified
BANDSAW BLADE WELDER
by HUGH
Price Not Specified
More "Wanted" Ads...

Get In Touch!

Do you want to contact the Model Engineer and Model Engineers' Workshop team?

You can contact us by phone, mail or email about the magazines including becoming a contributor, submitting reader's letters or making queries about articles. You can also get in touch about this website, advertising or other general issues.

Click THIS LINK for full contact details.

For subscription issues please see THIS LINK.

Digital Back Issues