Year: 1887

page_text: Date of Application, 22nd Feb., 1887.
Complete Left, 22nd Mar., 1887.
Complete Accepted, 22nd Apr., 1887.
I, WILLIAM MALCOLM of Bo'ness in the County of Linlithgow, North Britain,
Dock Contractor and Stevedore do hereby declare the nature of this invention to be
as follows:-
This Invention which relates to a new or improved Automatic Tipping scoop, used
for loading or unloading, or otherwise conveying or removing earth, minerals, or
other materials has for its object the tipping of the said scoop by automatic means,
thereby dispensing with, and lessening manual labour, such scoops being suspended or
mounted upon trunions, or their equivalents, so as to be capable of turning thereon
during the action of tipping.
The hoisting gear and automatic tipping apparatus immediately in connection
with the scoop, consists of a suspension bow, which is composed of a cross-bar
and two arms, the said arms having eyes at each end with holes drilled through
them, one end of each arm being fitted to the said trunions or their equivalents,
whilst the other end of each arm is similarly secured to the extremities of the cross
bar. Attached to the centre of the said cross-bar is a hook and shackle, preferably of
one forging the said shackle being in communication with the hoisting chain of the
crane, whilst the hook is permanently secured to a short chain, whose opposite end is
In addition to this short
attached to an upright bar riveted to the back of the scoop.
chain already mentioned, when the scoop is being hoisted the said hook grips another
short chain in front which is secured to both sides of the scoop, near the mouth of the
same, thus keeping the scoop in equilibrium and preventing it from tipping or tilting
accidently whilst being raised. The cross bar, with the hook and shackle attached, is
placed, in side elevation above and between the axis of the trunions, and the line of
attachments of the front chain to the scoop, so that both the before mentioned arms
and the front chain are inclined out of the vertical. The other short chain which is
permanently fixed to the book is usually horizontal or slightly raised at the back.
When it is required to tip it is necessary to lower the scoop until its bottom
comes in contact with the ground or other object, then by still further paying out the

page_text: lifting chain, the suspension bow being inclined out of the vertical, falls forward
towards the mouth of the scoop, carrying the hook and shackle with it, the whole
tending to move through an are of a circle, with the trunions or joint pins as centre,
but as the short back chain is firmly attached to the bottom part of the hook, the said
hook is tightly drawn up, and forced out of the link of the front chain, which is
thereby allowed to drop. On attempting to raise the scoop which is now only caught
towards the back, it is tipped up and the contents discharged. It is then lowered,
charged, and after placing the front chain on the hook the scoop is again ready to be
raised.
The scoop is hoisted or lowered by the use of hydraulic or steam power
D. DRYSDALE AUSTIN,
101, St. Vincent Street, Glasgow,
Petitioner's Agent.

page_text: I, WILLIAM MALCOLM of Bo'ness in the County of Linlithgow, North Britain, Dock
contractor and stevedore, 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 which relates to a new or improved automatic tipping scoop used
for loading and unloading or otherwise conveying or removing earth, minerals or
other materials, has for its object the tipping of the said scoop by automatic means
thereby dispensing with and lessening manual labour such scoops being suspended or
mounted upon trunions, or their equivalents, so as to be capable of turning thereon
during the action of tipping.
The hoisting gear and automatic tipping apparatus immediately in connection with
the scoop consists of a suspension bow which is composed of a cross-bar and two arms,
the said arms having eyes at each end with holes drilled through them one end of
each arm being fitted to the said trunions or their equivalents whilst the other end of
each arm is similarly secured to the extremities of the cross-bar. Attached to the
centre of the said cross-bar is a hook and shackle, preferably of one forging, the said
shackle being in communication with the hoisting chain of the crane, whilst the hook
is permanently secured to a short chain, whose opposite end is attached to an upright.
bar, riveted to the back of the scoop. In addition to this short chain already
mentioned when the scoop is being hoisted the said hook grips another short chain in
front which is secured to both sides of the scoop near the mouth of the same, thus
keeping the scoop in equilibrium and preventing it from tipping or tilting accidentally
whilst being raised. The cross bar with the hook and shackle attached is placed in
side elevation above and between the axis of the trunions, and the line of attachments
of the front chain to the scoop, so that both the beforementioned arms, and the front
chain are inclined out of the vertical. The other short chain which is permanently
fixed to the hook is usually horizontal or slightly raised at the back.
When it is required to tip, it is necessary to lower the scoop until its bottom comes
in contact with the ground or other object, then by still further paying out the lifting
chain, the suspension bow being inclined out of the vertical, falls forward towards the
mouth of the scoop, carrying the hook and shackle with it, the whole tending to move
through an arc of a circle with the trunions or joint pins as centre, but as the short
back chain is firmly attached to the bottom part of the hook, the said hook is tightly
drawn up and forced out of the link of the front chain, which is thereby allowed to
drop. On attempting to raise the scoop which is now only caught towards the back,
it is tipped up and the contents discharged. It is then lowered charged and after
placing the front chain on the hook the scoop is again ready to be raised.
The scoop is hoisted or lowered by the use of hydraulic or steam power.
In order that my said Invention may be properly understood and readily carried
into effect I will now proceed to describe the drawings hereunto annexed.

page_text: Figure 1, is a side elevation of an automatic tipping scoop constructed according to
and constituting my present Invention.
Figure 2, is a front elevation of the same, A is the scoop, B B' the trunions or
joint pins upon which the scoop A, revolves when being tipped, C is the cross bar
which in combination with the two arms D D', forms the bow by which the scoop is
partly suspended, the front chain E carrying the remainder of the load F, is the
shackle to which the hoisting or lifting chain G of the crane is attached, whilst the
hook F¹, receives the beforementioned chain E, which is secured to the projecting
flat bars H H', the said bars being riveted to the sides of the scoop A, near the mouth
of the same.
The short back retaining chain I, is firmly secured at one end to the
flat projecting part F2, at the bottom of the said hook F₁, whilst the other end is
similarly fixed by the pin K, to an upright bar J, riveted to the back of the scoop A.
On tipping the scoop A, it is necessary that it be lowered until it rests on the
ground or other object, when by still further unwinding the lifting chain G, the
arms D D', with the cross bar C₁, and hook F1 attached, being inclined out of
the vertical towards the mouth of the scoop A, falls by their own gravity, moving
through an are of a circle with the trunions or joint pins BB' as centre. The hook F
is not however free to move through the same angle as the arms D D¹, as it is
restrained at the point F, by the chain I, to describe an arc of a circle with the
pin
as centre. These movements are performed simultaneously till the arms D D', and
hook F¹, have reached the positions indicated by the dotted lines in figure 1,-During
these motions the hook F¹ has been withdrawn by the action of the back chain I, from
the centre link of the chain E, the said front chain E boing thereby allowed to full.
K
On attempting to raise the scoop A, which is now only caught towards the back
that is, at the trunions B B¹, and the pin K, it is tipped up and the contents discharged.
the
It is then lowered, charged, and after placing the front chain E on the hook F¹,
scoop A, is again ready to be raised.
Having now particularly described and ascertained the nature of my Invention, and
in what manner the same is to be performed I declare that what I claim is―
First. The general arrangement and combination of parts constituting the new or
improved tipping scoop substantially as hereinbefore set forth with reference to the
annexed drawings.
Second. As automatic means for tipping scoops, buckets or the like, the fixing of
the back chain I, to the projecting part F, of the hook F¹, in relation to the scoop A,
and the front chain E, substantially as and for the purposes hereinbefore set forth
with reference to the annexed drawings.
Dd of M 1907
D. DRYSDALE AUSTIN,
Applicant's
Agent.