IMPROVEMENTS IN MOVING CYLINDER STEAM HAMMERS
Year: 1880

page_text: LETTERS PATENT to Allan Carswell Wylie, of Cannon Street, in the City
of London, Engineer, for an Invention of "IMPROVEMENTS IN MOVING
CYLINDER STEAM HAMMERS."
PROVISIONAL SPECIFICATION left by the said Allan Carswell Wylie at
the Office of the Commissioners of Patents on the 24th December 1880.
ALLAN CARSWELL WYLIE, of Cannon Street, in the City of London, Engineer.
"IMPROVEMENTS IN MOVING CYLINDER STEAM HAMMERS."
My Invention is designed for rendering the construction of moving cylinder
steam hammers, as protected under Letters Patent granted to John Condie under
date 15th Oct. 1846, and Number 11,411, more simple and economical.
My improvement consists of a modified form of guide for directing the travel of
the moving cylinder. Instead of a tongue guide bolted to each side of the framing,
I use the elongated ends of two transverse ties across the jaws of the framing to
form with the faces of the framing a suitable groove or recess in which the
cylinder may slide. I now make the top cover of the moving cylinder carrying
the stuffing box a solid casting with the cylinder itself, and attach the lower end
or cover by a bolted flanged joint.
This enables me to concentrate a large portion of the required weight of the
tup in the aforesaid lower end or cover, into which is also fitted the hammer face.
I may also use in the case of exceedingly large and heavy hammers a series of
bolted flanged joints in the cylinder and tup to reduce the weight of individual
castings.
I now make one hollow piston rod suffice for the admission and exhaust of the
steam to and from each side of the piston, even for a double acting moving cylinder
hammer, instead of the double hollow piston rod at present in use.
This I effect by dividing the hollow piston rod with a central web. Each of the
chambers thus formed communicates at the upper ball and socket joint through
suitable ports with the usual valve or valves as at present in use. At the piston
end one of these chambers communicate through ports in the piston rod
with the upper part of the cylinder, and the other chamber communicates through
the piston with the lower side of the cylinder. By the action of the valve or valves
referred to, and these two chambers in the hollow piston rod, and by the aid of the
ports described, a double acting effect of the steam may be obtained upon the
cylinder which is the hammer.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Allan Carswell Wylie in the Great Seal Patent Office on the
23rd June 1881.
ALLAN CARSWELL WYLIE, of Cannon Street, in the City of London, Engineer.
⚫ IMPROVEMENTS IN MOVING CYLINDER STEAM HAMMERS."
My Invention is designed for rendering the construction of moving cylinder
steam hammers, as protected under Letters Patent granted to John Condie under
date Fifteenth October, One thousand eight hundred and forty six, and Number
11,411, more simple and economical.
My improvement consists of a modified form of guides for directing the travel
of the moving cylinder. Instead of tongued guides bolted to each side of the
framing I use the elongated ends of two transverse ties across the jaws of the
framing to form with the faces of the framing a suitable groove or recess in which
the cylinder may slide. I now make the top cover of the moving cylinder
carrying the stuffing box a solid casting with the cylinder itself, and attach the
lower end or tup cover by a bolted flanged joint.
This enables me to concentrate a large portion of the required weight of the tup
in the aforesaid lower end or cover, into which is also fitted the hammer face.
may also use in the case of exceedingly large and heavy hammers a series of
bolted flanged joints in the cylinder and tup to reduce the weight of individual
castings.
I now make one hollow piston rod suffice for the admission and exhaust of the
steam to and from each side of the piston, even for a double acting moving
cylinder hammer, instead of the double hollow piston rod at present in use.
This I effect by dividing the hollow piston rod with a central web. Each of the
chambers thus formed communicates at the upper ball and socket joint through
suitable ports with the usual valve or valves as at present in use.
At the piston
end one of these chambers communicates through ports in the piston rod with the
upper part of the cylinder, and the other chamber communicates through the
piston with the lower side of the cylinder. By the action of the valve or valves
referred to, and these two chambers in the hollow piston rod, and by aid of the
ports described, a double acting effect of the steam may be obtained upon the
cylinder which is the hammer.
And in order that my Invention may be the
to describe the Drawings hereunto annexed,
and Figures marked thereon.
better understood, I now proceed
reference being had to the letters
Figures 1 and 2 are outside elevations of the whole hammer showing the adapta-
tion of the moving cylinder tup A, the guides B, and the improved piston rod C.
Figure 3 shows a sectional plan in detail of the improved guide B. D is the
section of the main hammer frame; and B, B, are broken views of the transverse
ties across the jaws of the frame. The ends of these ties E, E, Figure 1, are
elongated upwards and downwards so as to form with the main frame a rectangular
groove in which slide the projecting horns F, F, of the moving cylinder tup. As
the transverse ties B, B, are bolted together by the bolts G the cylinder is free
from the guides as soon as these bolts G and ties B are removed.
Figure 4 shows a detailed view of my improved cylinder tup. I make the top
end of the cylinder A which carries the stuffing box H, shown in plan at Figure 5,
all cast solid in one piece, and I attach the heavy tup end K of the hammer as the
lower cover to the cylinder A by the bolted flanged joints L. Into this lower tup
cover is fitted the hammer face M. In the case of exceedingly heavy hammers the
cylinder may be subdivided by a series of such bolted flanged joints.
Figures 6 and 7 show details of my improved piston rod and piston. The piston

page_text: rod N, Figure 7, is now divided by a central diaphragm, which may or may not be
cast solid with the rod, into two passages O and O', one of which, O, conducts the
steam through the hollow half piston P and the orifices Q to the upper side of the
piston, and carries the exhaust away by the same passages. The other passage O¹,
hollow half piston P¹, and orifices Q¹ conduct the steam to or carry it away from
the under side of the piston in the same manner.
In Figure 6 is shown the upper
end of the piston rod N made in the form of a ball and socket joint so as to allow
of lateral movements, and the two passages O and O' with the diaphragm between
issue through the side of the piston rod, through ports R to a slide valve box S,
where a slide valve or valves of suitable description may be used.
And having now described and ascertained the nature of my said Invention,
and the manner in which it is to be performed, be it known that what I consider
novel and useful, and desire to protect by my Letters Patent is,
1st. The improved form of guide in combination with the moving cylinder
hammer, substantially as herein before described.
2nd. The improved form of construction of the moving cylinder hammer, the
upper end being cast solid, the lower end being attached by a bolted joint,
substantially as berein before described.
3rd. The improved form of piston rod in combination with a moving cylinder
bammer, wherein a solidly cast diaphragm divides the rod into two steam and
exhaust passages, substantially as described.
In witness whereof, I, the said Allan Carswell Wylie, have hereunto set
my hand and seal, the Second day of May, in the year of our Lord One
thousand eight hundred and eighty one.
Witness,
JOHN C. FELL,
Patent Agent,
23, Rood Lane, E.C.
ALLAN C. WYLIE. (L.S.)