Drawing of model of track on the bottom monorail.
Model exhibited before the Royal Society, May 8, 1907.
Extract from Chapter V;-
72. The gyroscope has been employed by Mr. Louis Brennan
with striking ingenuity and success, to ensure the
stability of a heavy car travelling on a single line
of rail, with its centre of gravity above the level
of the rail, as is seen in the accompanying illustrations....
A full description of the mechanism, with a mathematical
discussion on the subject, is given by Mr. H. Cousins
in the issue of Engineering for Nov. 21st, 1913,
and following numbers.
From the book
An Elementary Treatment of the Theory of
Spinning Tops and Gyroscopic Motion.
By Harold Crabtree M.A.
Formerly Scholar of Pembroke College, Cambridge
Assistant Master at Charterhouse
Longmans, Green and Co. 1923
First Edition 1909
Second Edition 1914
New Impression 1923
(C) Copyright Tony Lance 1998
Distribute complete and free of charge to comply.
Big Bertha Thing francis
To my brother-in-law Francis (RIP),
who I once called "as daft as a brush."
To his everlasting credit,
he replied "I know."
The greatest compliment,
my wife ever paid me,
was to say, that I did not hold a grudge.
Net surfers do not hold grudges,
but they are a bit short on victim support,
whichever side the victim comes from.
From: Tony Lance <jude...@bigberthathing.co.uk>
Subject: Re: Big Bertha Thing redoubt
Date: Wed, 04 Apr 2007 18:37:41 +0100
Big Bertha Thing adversity
Milton (1644) from The Liberty of Unlicensed Printing.
First, when a city shall be as it were besieged and blocked about,
her navigable river infested, inroads and incursions round,
defiance and battle oft rumoured to be marching up
even to her walls and suburb trenches;
that then the people, or the greater part, more than at other times,
wholly taken up with the study of the highest and most important
to be reformed, should be disputing, reasoning, reading, inventing,
discourcing, even to a rarity and admiration,
things not before discourced or written of,
argues first a singular good will,
contentedness and confidence in your prudent forsight,
and safe government, Lords and Commons;
and from thence derives itself to a gallant bravery and well-grounded
of their enemies, as if there were no small number of as great spirits
as his was, who when Rome was nigh besieged by Hannibal, being in the
bought that piece of ground at no cheap rate
whereon Hannibal himself encamped his own regiment.
Next, it is a lively and cheerful presage of our happy success and
For as in a body, when the blood is fresh, the spirits pure and
not only to vital, but to rational faculties,
and those in the acutes and the pertest operations of wit and
it argues in what good plight and constitution the body is;
so when the cheerfulness of the people is so sprightly up,
as it has not only wherewith to guard well its own freedom and
but to spare, and to bestow upon the solidest and sublimest points of
and new invention, it betokens us not degenerated,
nor drooping to a fatal decay,
by casting off the old and wrinkled skin of corruption to outlive
and wax young again, entering the glorious ways of truth and
destined to become great and honourable in these latter ages.
Methinks I see in my mind a noble and puissant nation rousing herself
like a strong man
after sleep, and shaking her invincible locks;
methinks I see her as an eagle nursing her mighty youth,
and kindling her undazzled eyes at the full mid-day beam;
purging and unscaling her long-abused sight at the fountain itself of
while the whole noise of timorous and flocking birds,
with those also that love the twilight, flutter about amazed at what
and in their envious gabble would prognosticate a year of sects and