Improvements in and connected with Traction and Portable Engines for Hauling and like Purposes.
Year: 1891

page_text: Date of Application, 16th June, 1891
Complete Specification Left, 16th Mar., 1892-Accepted, 30th Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in and connected with Traction and Portable Engines
for Hauling and like Purposes.
We JOHN MCLAREN and HENRY MCLAREN of Midland Engine Works Leeds
in the County of York Engineers do hereby declare the nature of this invention
to be as follows:-
This invention has for its object to provide means whereby traction or portable
engines can be used for hauling or like purposes (such for instance as pulling out
trees, or tree stumps, or land fast stones or other heavy hauling work) with great
facility and without injury to the engine and its connections by the heavy strain
put upon them. The engine is provided with means by which it can be anchored or
held fast to some fixed point and the hauling power is exerted by means of a rope
or chain on a drum carried on and actuated by the engine. A water tank is placed
under the barrel of the boiler which is constructed of plates of extra strength. At
the end of the said water tank preferably nearest the front of the engine,' are
secured the lugs, or eyes, to which the anchoring chains (or the like) are fastened.
At the other end of the said tank are strong angle irons by which the tank is
coupled up to the side plates of the firebox casing and which also carry the main
axle boxes. The pull of the anchoring chains is thus transmitted directly to the
main axle through the said lugs, tank plates, angle irons, and firebox casings.
Or, we may carry tie rods from the main axle forward to the front of the engine,
to which the anchoring chains may be fastened. In either case the pull on the
anchoring chains is transmitted directly to the main axle without passing through
any of the rivetted seams of the boiler.
such a
without
In order to allow the winding or hauling movements to be worked quickly and
independently we mount a winding drum with spur wheel and driving pinion in
position and in such a way that it can be thrown into or out of
gear
interfering with the travelling gear of the engine. The drum can be thrown out of
gear so that the rope or chain which it carries can be unwound by hand while the
engine is either travelling or at rest; or it can be made fast to the object to be
operated on or any other stationary article and the engine be made to move
forward into position for anchoring the rope or chain at the same time unwinding.
Then when the engine has been firmly anchored the drum can be put into gear and
the hauling rope be wound up. This throwing in and out of gear can be effected
by means of a pinion sliding on the intermediate shaft. It is disengaged when out
of gear so that there is no unnecessary loss of power when hauling out the rope or
chain by hand, as there would be if the pinion were left in gear constantly and
actuated by a clutch.
In order to make the winding drum entirely independent the axle is carried in a
strong tube extending from one side plate of the firebox to the other and is fitted
with bushes at each end and forms a pair of bearings or a double axle box for the
main axle at both sides of the engine. The winding drum is mounted externally
upon one end of this tube which is prolonged for the purpose. The drum is fitted
with a spur driving wheel fixed on one side, which is actuated by the sliding pinion
aforesaid, which is carried upon the intermediate shaft of the engine upon which
also the driving gear pinions for the travelling motion of the engine are carried.
The drum is also fitted with a self acting brake which is kept in contact with it by
means of a spring when out of gear but when thrown into gear the brake not being
then required is pulled out of contact with the drum. In order to get coiling

page_text: pulleys sufficiently large without excessive overhanging we make the back end of
the rear tank circular.
Dated 16th day of T1001
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, Agents.
COMPLETE SPECIFICATION.
Improvements in and connected with Traction and Portable Engines
for Hauling and like Purposes.
We JOHN MCLAREN and HENRY MCLAREN of Midland Engine Works Leeds
in the County of York Engineers do hereby declare the nature of this 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 has for its object to provide means whereby traction or portable
engines can be used for hauling or like purposes (such for instance as pulling out
trees or tree stumps, or land fast stones, or other heavy hauling work) with great
facility and without injury to the engine and its connections by the heavy strain
put upon them.
The engine is provided with means by which it can be anchored,
or held fast to some fixed point and the hauling power is exerted by means of a
rope, or chain, on a drum carried on, and actuated by, the engine. A water tank
is placed under the barrel of the boiler which is constructed of plates of extra
strength. At the end of the said water tank preferably nearest the front of the
engine, are secured lugs, or eyes, to which the anchoring chains (or the like) are
fastened.
At the other end of the said tank are strong angle irons by which the tank is
coupled up to the side plates of the firebox casing which also carry the main axle
boxes. The pull of the anchoring chains (or the like) is thus transmitted directly
to the main axle through the said lugs, tank plates, angle irons, and firebox
casing.
Or we may carry tie rods from the main axle forward to the front of the engine,
to which tie rods the anchoring chains (or the like) are fastened.
In either case
the pull on the anchoring chains (or the like) is transmitted directly to the main
axle without passing through any of the rivetted seams of the boiler.
:
In order to allow the winding, or hauling, movements to be worked quickly and
independently we mount a winding drum with a spur wheel and driving pinion in
such a position, and in such a way, that it can be thrown into, or out of, gear
without interfering with the travelling gear of the engine. The drum can be
thrown out of gear so that the rope, or chain, which it carries can be unwound by
hand while the engine is either travelling or at rest; or it can be made fast to the
object to be operated on or to any other stationary object and the engine be made
to move forward into position for anchoring; the rope, or chain, at the same time
unwinding. Then when the engine has been firmly anchored the drum can be put
into gear and the hauling rope or chain be wound up. This throwing in, and out
of. gear of the drum can be effected by means of a pinion sliding on the inter-
mediate shaft. It is disengaged when out of gear so that there is no unnecessary
loss of power when hauling out the rope, or chain, by hand, as there would be if the
pinion were left in gear constantly and actuated by a clutch.
In order to make the winding drum entirely independent the axle is carried in a
strong tube extending from ore of the side plates of the firebox to the other and is
fitted with bushes at each end and forms a pair of bearings, or a double axle box
for the main axle at both sides of the engine. The winding drum is mounted upon
one end of this tube which is prolonged externally for the purpose. The drum is
fitted with a spur driving wheel fixed or formed on one side, which is actuated by
the sliding pinion aforesaid which is carried upon the intermediate shaft of the

page_text: engine, upon which also the driving gear pinions for the travelling motion of the
engine are carried. The drum is also fitted with a self-acting brake, which is kept
in contact with it by means of a toothed rack when the drum is out of gear but
when the drum is thrown into gear the brake, which is not then required, is
automatically pulled out of contact with the drum.
In order to get coiling pulleys sufficiently large without excessive overhanging
we make the back end of the rear tank circular.
And in order that our said invention may be fully understood we shall now
proceed more particularly to describe the same and for that purpose shall refer to
the several figures of the annexed drawings the same letters of reference indicating
corresponding parts in all the figures.
Figure 1 represents in side elevation so much of a traction engine as is necessary
to illustrate an arrangement according to our invention for transmitting the strain
on the anchor chains (or the like) to the main axle of the engine through the water
tank and the fire-box casing as herein before described and
Figure 1 is a plan of one of the lugs or brackets to which the anchor chain or
the like is attached.
Figure 2 is a view similar to Figure 1 illustrating another arrangement whereby
the strain on the anchor chain or the like is transmitted through rods direct to the
main axle.
Figure 3 is a side elevation of a portion of a traction engine showing an arrange-
ment according to our invention for winding and hauling, and also for coiling the
rope, or the like, on the winding drum.
Figure 4 is a transverse section taken along the line 1-2 of Figure 3 and
Figure 5 is a plan partly in section.
;
Referring to Figure 1 A is the boiler of the traction engine B the fire-box C the
fire box casing and D the smoke box. The axle E of the main road wheels F is
mounted in bearings in or carried by the fire-box casing C and the axle of the front
road wheels G is mounted in bearings on the perch-bracket H. Beneath the
boiler A is a tank I supported at the front end by an angle iron K fixed to the
perch bracket H and at its rear end it is connected by strong angle irons L to
the fire-box casing C. The sides of the casing C are made of extra strong
metal, as are also the sides of the tank I so as to support the weight of the
tank and withstand the strain of the anchoring chain or the like. At, or near,
the front end of each side of the tank A is fixed a strong bracket M shewn
in plan in Figure 1A having an eye therein to which the anchoring chain or
the like is connected the strain on the said chain or the like being thus trans-
mitted through the sides of the tank 1 angle irons L and sides of the fire box
casing C, to the axle E of the main road wheels F.
In the arrangement illustrated by Figure 2 the strain of the anchoring chain
or the like is transmitted directly to the axle E of the main road wheels F by
connecting rods N extending along both sides of the engine one end of each rod being
provided with an eye N2 through which the axle E passes and the other end
being supported, and held in position, by a cap or strap N³ secured to the perch-
bracket H. The forward end of each rod N carries a link or links m to which
the anchoring chain or the like is connected when the engine is at work so that the
rods form a continuation of the chain or the like and transmit the strain thereon
direct to the axle E.
Referring now to Figures 3, 4 and 5 the axle E of the main road wheels F is
fitted to rotate in brasses a carried in a sleeve P which extends transversely from
side to side of the engine and projects sufficiently on one side to constitute a
journal P2 to receive a winding drum Q which is free to turn on the said journal
and carries a hauling chain or rope R. The drum Q is preferably of cast steel,
and is provided with a spur wheel S with which gears a pinion T mounted on
the intermediate shaft U through which the travelling motion is transmitted to the
road wheels of the engine.
The pinion T is capable of being slidden on the shaft U into, and out of, gear

page_text: with the spur teeth S, as required, by means of a forked piece a² on a rod, or
bar V fitted to slide in a bracket W and provided with rack teeth with which
gear corresponding teeth on the boss of a lever X centered to the bracket W so
that by turning this lever X in one direction the pinion T will be brought into
gear with the toothed wheel S and by moving it in the reverse direction the said
pinion will be disengaged from the said toothed wheel and permit of the drum
rotating freely on the journal P so that the hauling chain or rope R can be
uuwound from the drum Q without unnecessary friction and made fast to the
object to be moved while the engine is travelling forward to where it is required
to be anchored.
To prevent overrunning of the drum when disengaged from the pinion T we
provide a brake (Y) which is caused to bear on the flange or shroud of the teeth
of the wheel S and is held in position by a handle Z provided with a tooth bas
When the
shewn in Figure 5 engaging a rack c formed on the bracket d.
pinion T is moved into gear with the teeth of the wheel S the brake Y is auto-
matically released by means of a rod one end of which is held by means of a
spring g (bearing on a projection froin the bracket d and a collar on the rod f) in
contact with an inclined surface on the rod V the opposite end of the said rod f
bearing against the lever handle Z so that when the rod V is moved to bring the
pinion T into gear the rod f is moved forward against the pressure of the spring g
and forces the tooth out of engagement with rack whereupon the pressure of
the brake Y will be removed from the flange or shroud of the teeth of the
wheel S.
bushing & and is held
engaging in a groove
The winding drum Q is preferably provided with a brass
on the journal P2 by means of a divided or spring collar
formed in the end of the journal P² as shewn in Figure 4.
To enable the hauling to be effected in any desired direction without the
necessity for changing the position of the engine, we provide guide wheels, or
pulleys n, o, p, turning in bearings t between strong plates g carried by the tank r
round any one or more of which pulleys the chain or rope K is passed according to
the direction in which the pull is required to take place. In order to provide
room for these guide wheels or pulleys n. o. p. the end of the tank may be rounded
as shewn in Figure 5. s is a roller to support and guide the rope R from the
pulley p on to the drum Q.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what
we claim is :-
1st. In connection with traction or portable engines for hauling and like purposes
by means of a winding drum and chain or rope carried by the engine, means
whereby the engine may be anchored or held fast to some fixed point so that the
strain when hauling will be exerted on the axle of the main road wheels sub-
stantially as hereinbefore. described with reference to Figures 1 and 1^ and
Figure 2 of the accompanying drawings.
2nd. In traction or portable engines for hauling and like purposes by means of a
winding drum and chain or rope carried on the engine, mounting the winding drum
on a tube or sleeve through which the axle of the main road wheels passes
the interior of the tube or sleeve having bearing surfaces in which the said axle
turns substantially as hereinbefore described and shewn in Figure 4 of the accom-
panying drawings.
3rd. In traction or portable engines for hauling and like purposes by means of a
winding drum and chain or rope carried on the engine, providing the winding drum
with gear teeth by which it may be rotated by means of a pinion independently of
the gearing through which the travelling motion of the engine is effected, and
means for throwing the pinion into and out of gear with the teeth on the drum in
combination with means for bringing a brake into action when the drum is thrown
out of gear and for automatically disengaging the said brake when the drum is

page_text: thrown into gear substantially as hereinbefore described with reference to
Figures 3, 4 and 5 of the accompanying drawings.
4th. The combination of parts constituting improvements in traction or portable
engines whereby the strain when hauling is borne by the axle of the main road,
wheels substantially as hereinbefore described and illustrated by Figure 1 and
Figure 2 respectively of the accompanying drawings.
5th. The combination and arrangement of parts constituting improvements in
hauling apparatus for traction or portable engines substantially as hereinbefore
described and illustrated by Figures 3, 4 and 5 of the accompanying drawings.
Dated this 16th day of March 1892.
J. H. JOHNSON & Co.,
Agents.