A Method for Automatically Releasing or Opening Doors of Coal Tipping Wagons.
Year: 1894

page_text: Date of Application, 28th Junė, 1894
Complete Specification Left, 28th Mar., 1895-Accepted, 4th May, 1895
PROVISIONAL SPECIFICATION.
A Method for Automatically Releasing or Opening Doors of Coal
Tipping Wagons.
SAMUEL THOMAS, Stanwell Road Penarth, Collector of Dock Dues, JOHN
LLEWELLYN POWELL, 2 Dock Chambers Penarth Foreman, CYRIL TALWORTH
BATCHELOR Upper Cliff Penarth Civil Engineer, do hereby declare the nature of
this invention to be as follows:-
:―
An arrangement for releasing the door of coal tipping wagon whereby when the
end of the wagon is brought to a level or tilted at a proper level to allow the coal
or other material to slide from the wagon a lever or arm comes in contact with the
shoot or other part of the coal "hoist or "drop" and thereby releases an auxiliary
or a permanent catch attached to the wagon allowing the door to swing freely.
In the accompanying drawing
Fig. I shews the wagon in readiness for lowering or hoisting to the proper level
for discharging.
Fig. 1 shews the wagon about to be discharged and
Fig. 1 shews the door of the wagon released by means of the lever or arm (A)
coming in contact with the shoot (E) or any other arrangement that may be
provided for the purpose of raising the lever or arm and thereby releasing the
catch of the door.
Fig. IV shews the detail of one arrangement of catch that might be used the
lever or arm A comes in contact with the shoot E or other arrangement that may
be provided for the purpose and lifts the same which releases the catch B and the
hook C and lever D are allowed to fall and the door is then free to open or we
may have other arrangements of catches operated upon by the lever or arm A
being automatically raised.
The advantages claimed are:-
1. The automatic arrangement.
2. Less breakage of coal or other material.
3. Less loss of coal or other material.
4. Saving of labour.
5. Less risk to workmen employed.
6. Quicker dispatch.
A Method for Automatically Releasing or Opening Doors of Coal
Tipping Wagons.
We, SAMUEL THOMAS of Stanwell Road, Penarth, Collector of Dock Dues,
JOHN LLEWELLYN POWELL of No. 2 Dock Chambers, Penarth, Foreman, and
CYRIL TALWORTH BATCHELOR of Upper Cliff, Penarth, Civil Engineer, all in
the County of Glamorgan, do hereby declare the nature of this invention, and in
Price 8a.]

page_text: what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
Our invention relates to a method for automatically releasing or opening doors
of coal tipping waggons, and consists in the combination with a tipping waggon and
a fixed point upon the staith framing or some other fixed point past or up to which
the tipping waggon travels, of a pivotted latch adapted to automatically engage
with the waggon door when the latter is shut, and to be disengaged therefrom by
a pull on or a push upon the said latch, derived from the fixed point. The details
of the connection between the said fixed point and the latch may be varied without
departing from the present invention.
Referring to the accompanying figures which are to be taken as part of this
Specification and read therewith,
Figure 1 is a sectional front elevation illustrating the construction and operation
of the present invention.
Figure 2 is a detail of the latch on an enlarged scale.
Figure 3 is a plan of the latch illustrated in Figures 2 and 3.
Figure 4 is an elevation of a modified form of latch.
A, A are portions of the upright framing of the staith. Bis the tip, and C, the
shoot.
Dis the waggon door hinged along the top in the usual manner. E, E are the
usual pair of door fastenings. They may be used in addition to the present
invention but they are not part of it nor necessary to its successful operation.
F is the latch of the present invention. It is pivotted at upon the head-stock
or buffer-plank G of the waggon so as to work in the vertical plane and to swing
freely upon its pivot. The shape of the latch below the pivot may be varied to
suit the requirements of any particular case, as more fully explained further on.
Figures 1, 2 and 3 shew the outer end of it as cranked to stand under the waggon
end, while Figure 4 shews the entire latch as S-shaped and in one plane throughout.
The lower arm of the latch F is heavier than the upper one; so that the normal
tendency of the former arm is to swing downwards in obedience to gravity as far
as it can go. This downward swing is checked by the contour of a loop H fixed
upon the head-stock in such a position that the to and fro motion of the nose g
of the upper arm of the latch must be more or less within it. The length of the
shorter arm of the latch, i.e., the distance of the nose g from the pivot f, is
adjusted so that when the lower arm is pulled or pushed in the way described
further on, the said nose will stand below, and clear of, the lower edge of the
door D, and that when the latch F is free to follow the weight of its lower arm,
the said nose will stand up above the top edge of the head-stock G and then be in
front of the waggon door D if the latter were shut, thereby locking it.
The main consideration that will influence the shape of the lower arm of the
pivotted latch F is the position and nature of the fixed point from which the latch
will receive the pull or push above mentioned, by which it is disengaged from
the waggon door.
In Figure 1, this fixed point is shewn as being at I on the upright framing A of
the staith. That being the case, it is advisable, or it may be convenient, to crank
the lower arm of the latch F and to continue it under the waggon for a suitable
distance. A chain J is led from the outer end of the said arm to the fixed point I,
and the length of this chain is adjusted so that when the waggon is tipped, the
chain J will be taut at a point in the tipping motion which will leave enough of
the latter to provide for the consequent pull on the chain to pull the nose g of the
latch F away from before the waggon door D.
If the coal shoot C is called upon to furnish the fixed point in question, then the
shape and length of the lower and heavier arm of the latch F will be modified so
that it shall engage the shoot at a point of the tipping motion sufficiently in
advance of the end of that motion for the completion of the latter to effect the
disengagement of the latch from the door D.

page_text: It will now be clearly understood that the fixed point in question may be in any
suitable and convenient position, and the connection between it and the outer end
of the lower arm of the latch F, be one of either contact or push as described with
reference to the shoot C in the preceding paragraph, or one of pull through a
flexible connection as described with reference to the chain J.
Having now particularly described and ascertained the nature of our said
invention and in what manner it is to be performed, we declare that what we
claim is :-
1
1. The hereinbefore described method of automatically releasing or opening the
door of a coal tipping waggon.
2. The hereinbefore described combination of tipping waggon and a fixed point
upon the staith framing or some other fixed point past or up to which the tipping
waggon travels, a pivotted latch adapted to automatically engage with the waggon
door when the latter is shut, and to be disengaged therefrom by a pull on it or by
a push upon it, derived from the fixed point aforesaid.
Dated this 28th day of Mau 1008
PHILLIPS & LEIGH,
No. 22, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicants.