Improvements in or relating to Compound, Multiple Cylinder, and other Engines and Apparatus connected therewith.
Year: 1899

page_text: Date of Application, 21st July, 1899
Complete Specification Left, 10th Feb., 1900-Accepted, 7th Apr., 1900
66
DI ECIFICATION.
Improvements in or relating to Compound, Multiple Cylinder, and
other Engines and Apparatus connected therewith.
I, FRANK EVERARD MUSGRAVE, of the Firm of John Musgrave and Sons,
'Limited," of Globe Iron Works, Bolton, in the County of Lancaster, Engineers,
Millwrights, Boiler Makers, and Iron Founders, do hereby declare the nature
of my said invention to be as follows:-
This invention refers to improvements in or relating to compound, multiple
cylinder, and other engines and apparatus connected therewith and relates to
that type of vertical engines wherein triangular connecting rods are employed.
The connections between the triangular connecting rods and piston rods consist
of links hanging downwards toward the crank shaft, and coupled at their lower
ends to the slide-blocks attached to the piston rods. The effect of this dis-
position of the parts is that much longer links may be employed than hitherto,
whilst at the same time the total height of the engine will be considerably
reduced. By the employment of the longer links the angle through which they
vibrate is considerably reduced, thus causing in the same proportion a reduction
of friction on the slides, thereby increasing the mechanical efficiency of the
engine and reducing the wear on the slide-blocks and link necks to a minimum.
This arrangement allows of the slide-bars being brought down to the base of the
standards in which they are more capable of reducing the lateral strains due
to the thrust of the slide-blocks; which also places the working joints and other
parts in a more accessible position than has hitherto been possible with this
type of vertical engine. These improvements are applicable to compound and
triple expansion engines. In the latter case the three piston rods are coupled
to the connecting rod, the centre piston rod being guided in a straight vertical
line by means of a parallel motion; the two outer piston rods being con-
nected by links as before described. The outer ends of the triangular con-
ecting rod are provided with eyes or openings through which the piston rods
pass; the centres for the links being secured in position by being driven in
nd keyed, or the connecting rod shrunk over the centres. The centres for
he links on the connecting rods may be provided with a flange or dise and
ecured by set screws or their equivalents. If desired or necessary the piston
ods may pass through the centres, a hole or passage being formed in each
entre for the purpose; and in case a forked piston rod socket is employed the piston
ods are secured at the top end, the links working inside the forked piston rod
ocket. The above named improvements and arrangements are equally applicable.
or air compressors and pumping engines.
Dated the 20th day of July 1900

page_text: Improvements in or relating to Compound, Multiple Cylinder, and
other Engines and Apparatus connected therewith.
I, FRANK EVERARD MUSGRAVE, of the Firm of John Musgrave and Sons,
Limited," of Globe Iron Works, Bolton, in the County of Lancaster, Engineers,
Millwrights, Boiler Makers, and Iron Founders, do hereby declare the nature
of my said invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
This invention refers to improvements in or relating to compound, multiple
cylinder, and other engines and apparatus connected therewith and relates to
that type of vertical engines wherein triangular connecting rods are employed.
The connections between the triangular connecting rods and piston rods consist
of links hanging downwards toward the crank shaft and coupled at their lower
ends to the slide-blocks attached to the piston rods. The effect of this dis-
position of the parts is that much longer links may be employed than hitherto,
whilst at the same time the total height of the engine will be considerably
reduced. By the employment of the longer links the angle through which they
vibrate is considerably reduced, thus causing in the same proportion a reduction
of friction on the slides, thereby increasing the mechanical efficiency of the
engine and reducing the wear on the slide-blocks and link necks to a minimum.
This arrangement allows of the slide-bars being brought down to the base of
the standards in which they are more capable of reducing the lateral strains
due to the thrust of the slide-blocks; which also places the working joints and
other parts in a more accessible position than has hitherto been possible with
this type of vertical engine. These improvements are applicable to compound
and triple expansion engines. In the latter case the three piston rods are
coupled to the connecting rod, the centre piston rod being guided in a straight
vertical line by means of a parallel motion; the two outer piston rods being
connected by links as before described. The outer ends of the triangular con-
necting rod are provided with eyes or openings through which the piston rods
pass the centres for the links being secured in position by being driven in
and keyed, or the connecting rod is shrunk over the centres. The centres for
the links on the connecting rods may be provided with a flange or disc and
.secured by set screws or their equivalents. If desired or necessary the piston
rods may pass through the centres, a hole or passage being formed in each centre
for the purpose; and in case a forked piston rod socket is employed the piston
rods are secured at the top end, the links working inside the forked piston rod
socket. The above named improvements and arrangements are equally applic-
able for air compressors and pumping engines.
DESCRIPTION OF DRAWINGS.
Fig. 1-Sheet 1-is an outside elevation of a vertical compound steam engine
with my improvements applied. Fig. 2 a sectional elevation of one end of
triangular connecting rod showing piston rod through the same. Fig. 3 a plan
of Fig. 2. Fig. 4 a plan of centre in Figs. 2 and 3 with hole or slot to allow
piston rod to pass through. Fig. 5 a part sectional plan of one end of triangular
connecting rod showing method of securing centres by keys. Fig. 6 a part
sectional plan of one end of triangular connecting rod with centres shrunk in.
Fig. 7 a part sectional plan of one end of triangular connecting rod with the
centres provided with a flange or disc and secured by set screws. Fig. 8-
Sheet 2 is an outside elevation of a vertical triple expansion or multiple

page_text: cylinder steam engine with my improvements applied. Fig. 9 an enlarged side
view of forked piston rod socket and link for coupling piston rods to slide-
blocks, and Fig. 10 is a front elevation of Fig. 9.
In order that my invention may be readily and clearly understood I will now
proceed to describe each sheet of drawings in as succinct a manner as possible
taking each sheet of drawing in their respective order.
A represents the high-pressure cylinder; B low-pressure cylinder; C high-
pressure cylinder piston rod; D low-pressure cylinder piston rod; E triangular
connecting rod; G disc crank; H crank pin; I steam valve boxes of high-pressure
cylinder; J exhaust valve boxes of high-pressure cylinder; K steam valve boxes
of low-pressure cylinder; L exhaust valve boxes of low-pressure cylinder; M
steam inlet to high-pressure cylinder; N exhaust pipe from high-pressure cylin-
der to low-pressure cylinder; O standards, and P foundation or framework of
box form.
In all the figures the same letters and numerals are employed to indicate
corresponding parts.
"
Sheet 1.-On the foundation or framework P are mounted the standards O
provided with the slide-bars R. On the upper ends of the standards O are
mounted the high-pressure cylinder A and the low-pressure cylinder B provided
with the valve boxes I, J, K and L, fitted with what are well known in the
trade as "Corliss
or rotary valves; the latter being mounted on the the valve
spindles S. On the crank shaft T is mounted the disc crank G. carrying the
crank pin H on which is located the lower end of the triangular connecting
rod E; the ends or bosses U of the latter being provided with the holes or
passages Was shown in Figs. 2 and 3--to allow of the piston rods C and D
passing through to the crossheads V, and secured to the latter by the nuts X. The
crossheads V are attached to or formed with the slide blocks Y mounted on the
slide bars R. The ends or bosses U of the triangular connecting rod E are
provided with the centres Z on which are mounted the links a hanging down-
wards towards the crank shaft T and coupled at their lower end to the centres b
of the crossheads Vattached to the slide blocks Y secured to the lower end of
the piston rods C and D by the nuts X. The triangular connecting rod E is
fitted with the centre E2 to which is attached one end of the lever F; the latter
being mounted on the centre F3 located in the bearing F on the standard 0:
the lever F being for the purpose of guiding the triangular connecting rod E
in its up and down oscillating motions effected by the rotating action of the
crank G and crank shaft T. The outer end G2 of the lever F2 may be employed
for working an air or other pump. It will be seen that by this disposition of
the parts that the length of the links a is much longer than those employed
hitherto which will reduce the strain on the piston rods and slide bars con-
siderably, at the same time the total height of the engine will be considerably
reduced which is the object of this invention.
that by the employment of the links a in the manner set forth and as shown
Another important feature is
in the drawings that the angle through which they vibrate is considerably
diminished, thus reducing the friction on the slides R, thereby increasing the
mechanical efficiency of the engine and reducing the wear on the slide blocks Y
and link necks 7 and 6 to a minimum. This arrangement allows of the slide-
bars R being brought down to the base of the standards O, in which position
they are more capable of resisting the lateral strains due to the thrust of the
slide blocks Y, which also places the working joints and other parts in a more
accessible position than has hitherto been possible with inverted vertical engines.
The outer ends U of the triangular connecting rod E are provided with the eyes
or openings W through which the piston rods C and D pass; the centres Z for
the links a being secured in position by being driven in and secured by the
key d as shown in Fig. 5, or, the centres Z may be shrunk in position and the
nner edges rivetted over as shown in Fig. 6. The centres 7 for the links a may
e provided with the flange or disc f and secured by the set screw gas in
Fig. 7. In case it is desired to pass the piston rods C and D through the ends

page_text: or bosses U the centres Zare formed with the enlarged middle portion h with
the hole or passage W as shown in Figs. 2, 3 and 4.
Sheet 2. On the foundation or framework P are mounted the standards Q
provided with the slide bars R. On the upper ends of the standards O is
imounted the beam or entablature O¹ on which are located in a fixed position
the high-pressure cylinder A, intermediate cylinder. A', and low-pressure cylin-
der B provided with the valve-boxes I, J, K, L, M and N¹ fitted with what
are well known in the trade as
"
Corliss or rotary valves mounted on valve
On the crank shaft T is, mounted..the
"
spindles operated in the usual manner.
disc crank G carrying. the crank pin H on which is located, the lower end of
the triangular connecting rod E the ends or bosses U of the latter being pro
vided with the holes or passages W-as shown in Figs. 2 and 3 on Sheet 1 of
the drawings to allow of the piston rods Cand 1) passing through to the
cross-heads being secured to the latter by the nuts X. The crossheads V
are attached to the slide blocks Y mounted on the slide bars R. The ends or
bosses U of the triangular connecting rod E are provided with the centres Z
on which are mounted the links a hanging downwards toward the crank shaft T,
and coupled at their lower ends to the centres of the crossheads Vattached to
the slide blocks Y secured to the lower end of the piston rods C and D by the
nuts X. If desired the links a may be substituted by the links a' as shown in
Figs. 9 and 10 on Sheet 2 of the drawings for coupling the ends U of the
connecting rod E to the piston rods C and D; the links a working inside the
forked piston rod socket $2. The forked piston rod socket is provided at its
upper end with the boss 83 in which is secured the piston rod C or D by the
cottar or key S. The lower or bottom end S of the forked piston rod socket S
is provided with the flanges S6 to which are secured the slide block Y, which
operates up and down on the slide bars R. The bottom or lower end of the
piston rod socket S is attached to the lower end of the link a by the pin .or
centre. The piston rod C¹ of the high-pressure cylinder A is coupled to the
centre P mounted in the centre of the bar t connecting the ends or bosses. U. of
the triangular connecting rod E. The parallel motion for guiding the piston
rod C in a vertical line consists of the levers F2 and H2; the latter being mounted
on, the centre H³ located in the bearing H on the standard 0, and the lever F2
is mounted on the centre F³ located in the bearing F on the standard O. The
centres and F6 of the levers F2 and H2 respectively are connected by the
links 13 mounted on the centre p in the crossbar t of the triangular connecting
rod E. It will be seen that by the before mentioned disposition of the parts
that the length of the links a is much longer than those employed hitherto which
-will-reduce the strain on the piston rods and slide bars considerably, at the same
time the total height of the engine will be considerably reduced which is the
chief object of this invention. An important feature is that by the employment
of the links a in the manner set forth and illustrated in the drawings that the
angle through which they vibrate is considerably diminished, thus reducing the
friction on the slide-bars R, thereby increasing the mechanical efficiency of the
engine and reducing the wear on the slide blocks Y and the link necks Z and b
to a minimum. This arrangement.also allows of the slide bars R being brought
down to the base of the standards O in which position they are more capable
of resisting the lateral strains due to the thrust of the slide-blocks Y, which also
places the working joints and other parts in a more accessible position than has
hitherto been possible with large inverted vertical engines. The outer ends U
of the triangular connecting rod E are provided with the eyes or openings W
through which the piston rods C and D pass; the centres Z for the links a being
secured in position by being driven in and secured by the key d as shown in
Fig. 5 on Sheet 1 of the drawings, or the centres ½ may be shrunk in position
with the inner edges rivetted over as shown in Fig. 6 on Sheet 1 of the drawings.
The centres Z for the links a may be provided with the flange or disc f and
secured by the set screws gas in. Fig. 7 on Sheet 1 of the drawings. In case
.

page_text: it is desired to pass the piston rods C and D through the centres Z, the latter are
formed with the enlarged middle part with the hole or passage Was shown in
Figs. 2, 3 and 4 on Sheet 1 of the drawings. The whole of the before mentioned
improvements are equally applicable for what are well known in the trade as
air compressers and pumping engines. This invention is equally applicable for
inverted vertical engines wherein the cylinders are composed of and employed
wholly or separately on the high-pressure principle, wherein the exhaust steam
is passed into the atmosphere, or as condensing engines only.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-.
1. The general arrangement construction and combination of parts composing
my improvements in or relating to compound and other engines with inverted
cylinders mounted on the upper end of the standards O supported on the founda-
tion or framework of box form P, wherein the piston rods C and D pass through
the eyes or openings W in the ends or bosses U of the triangular connecting
rod E to the crossheads V attached to or formed with the slide blocks Y on the
slide bars R disposed at the base or lower end of the standards O; the connec-
tions between the centres of the crossheads V and slide blocks Y and the
centres Z of the ends or bosses U of the triangular connecting rod E consisting
of the links a hanging from the centres Z of the ends or bosses U to the centres 6
of the crossheads V, the whole being constructed, connected, applied, and opera-
ting as described and as illustrated in Figs. 1 to 7 inclusive on Sheet 1 of the
drawings for the purpose of reducing the total height of the engine, substantially
as set forth.
2. The general arrangement construction and combination of parts composing
my improvements in or relating to multiple cylinder and other engines with
inverted cylinders mounted on the beam or entablature O¹ disposed on the upper
ends of the standards O supported on the foundation or framework of box form P,
wherein the piston rods C and D pass through the eyes or openings Win the ends or
bosses U of the triangular connecting rod E to the crossheads V on the lower ends of
the piston rods C and D attached to or formed with the slide blocks Y on the slide
bars R disposed at the base or lower end of the standards 0; the connections
between the centres of the crossheads V and slide blocks Y and the centres Z
of the ends or bosses U of the triangular connecting rod E consisting of the links a
hanging from the said centres Z to the centres b of the crossheads V; the piston
rod C¹of the centre cylinder A being coupled to the centre p mounted in the
bar t connecting the ends or bosses U of the triangular connecting rod E, the
piston rod C being guided in a vertical line by means of the levers F2 H2 and
links I forming the parallel motion, the whole being constructed, connected,
applied, and operating as described and as illustrated in Fig. 8 on Sheet 2 of
the drawings for the purpose of reducing the total height of the engine sub-
stantially as set forth.
3. The construction of the piston rod socket S2 provided at its upper end with
the boss S keyed to the piston rod; the lower or bottom ends S being provided
with the flanges S to which are secured the slide block Y, the lower or bottom
end of the link at being attached by the pin or centre ; the upper end of the
link a being pivoted in the ends or bosses U of the triangular connecting rod E
by the pin or centre ¹, substantially as described and as shown in the drawings
in Figs. 9 and 10 on Sheet 2.
Dated the 9th day of February 1900
EDMUND CHADWICK,
Agent.