IMPROVEMENTS IN RAISING AND LOWERING THE CHIMNEYS OF PORTABLE AND OTHER ENGINES AND IN APPARATUS OR MEANS TO BE EMPLOYED THEREIN
Year: 1883

page_text: LETTERS PATENT to James Perkins Coultas of Grantham in the County of
Lincoln Agricultural Engineer for an Invention of IMPROVEMENTS IN
RAISING AND LOWERING THE CHIMNEYS OF PORTABLE AND OTHER ENGINES
AND IN APPARATUS OR MEANS TO BE EMPLOYED THEREIN "
PROVISIONAL SPECIFICATION left by the said James Perkins Coultas at the
Office of the Commissioners of Patents on the 15th June 1883.
JAMES PERKINS COULTAS of Grantham in the County of Lincoln Agricultural
Engineer "IMPROVEMENTS IN RAISING AND LOWERING THE CHIMNEYS OF
PORTABLE AND OTHER ENGINES AND IN APPARATUS OR MEANS TO BE EMPLOYED
THEREIN
"
This invention has for its object the substitution of a convenient and simple
mechanical contrivance for raising and lowering the chimneys of portable and
other engines in lieu of the present clumsy and dangerous method of effecting the
same by the hands of the attendant who has to mount tho engine for that purpose
and from which many accidents have resulted. According to one mode of carrying
out my invention which may obviously be accomplished by various mechanical
combinations or arrangements I propose to mount on the end of the smoke box or
in any other conveniently accessible part of the portable and other engine a small
windlass worked by a worm and worm-wheel or other suitablo gearing and
actuated by a winch handle or its equivalent placed so as to be easily reached from
the ground. A chain and rod running the whole length of the chimney are
attached at one end to the windlass barrel and at the other end to the chimney
itself the said chain passing over a suitablo guide roller or antifriction pulley on
the chimney base and being lead through an opening in a lug or projection on the
chimney joint piece. On winding or unwinding the chain the chimney will be
raised or lowered as required with the greatest facility. In some cases if desired
racks and pinions can be substituted for the chain and windlass.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Perkins Coultas in the Great Seal Patent Office on the
15th December 1883.
JAMES PERKINS COULTAS of Grantham in the County of Lincoln Agricultural
Engineer "IMPROVEMENTS IN RAISING AND LOWERING
OF
THE CHIMNEYS
PORTABLE AND OTHER ENGINES AND IN APPARATUS OR MEANS TO BE EMPLOYED
THEREIN
"
My said Invention has for its object the substitution of a convenient and simple
mechanical contrivance for raising and lowering the chimneys of portable and
other engines in lieu of the present clumsy and dangerous method of effecting
the same by the hands of the attendant who has to mount the engine for that
purpose and from which many accidents have resulted.
According to one mode of carrying out my invention which may obviously be
modified in various ways I mount on the end of the smoke box or in any other
conveniently accessible part of a portable or other engine a windlass worked by
preference by a worm and worm-wheel or by ordinary toothed gearing and a
ratchet wheel and detent actuated by a winch handle or its equivalent placed so as
to be easily reached from the ground.. A chain and rod or other flexible connector
running the whole length of the chimney is attached at one end to the windlass
barrel and at the other end to the chimney near the top thereof the said chain
passing over a suitable guide roller or antifriction pulley on the chimney base and
being also led through an opening in a lug or projecting arm on the joint piece so
that it shall form an angle with the chimney. On winding or un-winding the
chain the chimney will be raised or lowered as required with the greatest fucility.
A helical or other spring contained in a spring box or otherwise fitted serves to
start the chimney out of the perpendicular when commencing to lower it and also
acts as a buffer to allow the lower part of the chimney when nearly elevated to
descend gently onto the fixed chimney base.
And in order that my said invention may be fully understood I shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several figures on the explanatory sheet of drawings hereunto annexed the same
letters of reference indicating corresponding parts in all the figures.
Figure 1 of my drawings is a general outline view on a small scale of a portable
engine and boiler illustrating the mode of applying thereto my said improved
arrangement for raising and lowering the chimney thereof which is here shown as
partly elevated.
Figure 2 is a detail side elevation drawn to fa larger scale showing the chimney
base the lower part of the chimney itself and the raising and lowering arrange-
ment. The dotted lines in this figure show the position of the chimney when
partially lowered.
Figure 3 is a front elevation corresponding to fig 2 and
Figure 4 is a half plan showing the chimney base with its antifriction guide
pulley and the position of the windlass.
A is the boiler. B the chimney base, C the chimney and D. the windlass. E is
a chain and rod or other suitable flexible connector attached at one end near
to the top of the chimney and at the other end to the barrel or by preference
narrow and deep flanged pulley a the chain in the latter case being wound thereon
coil over coil so that at the commencement of the lift the greatest power will be
exerted, the diameter of the pulley being then at its smallest but virtually
increasing by the superposition of the successive coils of chain as the chimney is
J

page_text: elevated. The axle b of the pulley or barrel is mounted in a double bracket a
bolted or otherwise secured (by preference) to the front of the smoko box or to
any convenient part of the boiler or framing. d is a worm wheel fast on the
axle b and actuated by a worm c on the spindle f turning in bearings in the
bracket c the outer end of which spindle is squared or otherwise formed to receive
an actuating winch handle not shown in my drawings. f is a lug or projecting
arm formed on or secured to the chimney joint pieco g. The chain E passes
through this lug and over tho antifriction guide roller which is mounted in
lugs i formed on or secured to the chimney base on the side farthest from the usual
hinge k. is a helical spring hero shown as contained in a spring box m bolted
to or cast on the front side of the chimney baso said spring when compressod
bearing at its upper end against the underside of the lug. To prevent the
temper of the spring from being affected by the heat from the smoke box I form a
free air space round the spring box as shown.
Having now described and particularly ascertained the nature of my said Invention
and the manner in which the same is or may be used or carried into effect I would
observe in conclusion that what I consider to be novel and original and therefore
claim as the invention secured to me by the hereinbefore in part recited letters
patent is :-
First. The mode or method of raising and lowering the chimneys of portable
and other engines by the aid of a windlass mounted on the smoke box, boiler,
framing, or other convenient part of the engine in conjunction with a chain or
other suitable flexible connector attached to the upper portion of the chimney
substantially as specified.
Second. The combination of a windlass with the smoke box, boiler or framing,
of a portable or other engine, and a chain or other suitable flexible connector
attached to the upper portions of the chimney and passing over a projecting arm
and guide pulley carried respectively by the joint ring or lower part of the
chimney and by the chimney base itself or other convenient fixed part substan-
tially as and for the purpose specified.
Third. The application and use of the lug or projecting arm f¹ and guide
pulley h arranged substantially as and for the purpose specified.
Fourth. The combination with my aforesaid apparatus for raising and lowering
the chimneys of Portable and other engines, of a spring arranged and caused to
act upon the chimney substantially in the manner and for the purpose specified.
In witness whereof I the said James Perkins Coultas have hereunto set my
hand and seal this eleventh day of December in the year of our Lord one
thousand eight hundred and eighty three.
JAMES PERKINS COULTAS (L.S.)