Improvements in Railway Fog Signalling Apparatus.
Year: 1893

page_text: · Date of Application, 2nd May, 1893-Accepted, 2nd June, 1893
COMPLETE SPECIFICATION.
Improvements in Railway Fog Signalling Apparatus.)
Iron
We, GREENWOOD MUSGRAVE, of St. Thomas Street, Stanningley,
Moulder, WILLIAM HENRY TRICKETT, of Houghend Lane, Bramley, Iron
Moulder, CORNELIUS STEPHENSON, of Call Lane, Boot Merchant, and SAMUEL
DEAN MARSHALL, of Railsfield Mount, Bramley, Iron Moulder, all in the County
of York, 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 :-
The object of our invention is to construct apparatus which can be readily
brought into operation during foggy weather, whereby siguals are given at the
required time to drivers of engines, or to others.
In order that our invention may be clearly understood, we will proceed to
describe same with reference to the accompanying drawings, in which similar
letters indicate like parts in all the figures.
Fig. 1 is a plan shewing apparatus constructed according to our invention.
Fig. 2 is an end elevation, and Fig. 3 is a side elevation of same.
According to our invention, we employ a vertical box (not shewn in the
drawings) which may contain any number of detonating caps, and such caps may
be of any suitable construction or section. At the base of this box is provided a
horizontal chamber A, which may extend forward to any desired extent, and being
of a suitable internal size to receive and convey the detonating caps B. In the
outer end of this horizontal chamber A is a piston C, which when moved presses
or forces the detonating caps B forward the distance of one cap, thus intermittently
allowing one cap to fall from the box and be pushed forward along the chamber A.
At the forward end of the horizontal chamber A and working just below or
approximately to such chamber, is a circular table or plate D, which is mounted
upon the shaft or spindle E. In this circular table or plate D are provided six, or
any other required number of recesses or openings, into which are fitted small
sliding discs F, such discs F being arranged to slide up and down as may be
required. This circular table D is intermittently moved round upon its shaft E,
whereby the discs Fare in their turn each brought underneath the end of the
horizontal chamber A where they each receive a detonating cap B, which caps are
intermittently fed round and placed underneath a vertically moving slide G. The
intermittent motion of the table D is performed by means of the ratchet H and
pawl J, operated by arm K, connecting rod L and lever M from the piston
slide A¹.
The discs F are provided with small runners F1, which run upon the guide
rail P arranged underneath and at one side of the table D, so that when the
disc F is receiving the detonating cap B, the surface of such disc is flush with the
table D, and after receiving the same, the disc F falls by reason of its runner F¹
leaving the guide rail P.
Below the vertically moving slide G is a wedge R, which when moved forward
comes in contact with the runner F of the sliding disc F, thereby lifting the same up
into position, and on a train or other railway vehicle passing over the signalling
place, the vertical slide G is depressed by the rim of the wheel or wheels, which
slide G explodes the detonating cap immediately below same, thus giving the
required signal.
The table D is then moved round, the runner F¹ coming onto the guide
rail P, which holds the disc F in the up position, when the empty case of the

page_text: cap comes in contact with the plough S, which throws such empty case off, out of
the way:
The intermittent movement is imparted to the piston C and wedge R above
referred to, by means of the wedge pieces T T, mounted on the slides U U, such
slides U U being operated by the connecting rods V V from the bell crank lever W,
or such piston and wedge may be worked separately or simultaneously by a lever or
levers either in connection with the ordinary signals or separately therefrom.
It will be readily understood that we do not confine ourselves to the precise
details of arrangements employed in obtaining the required various intermittent
movements above referred to, as the same may be modified without departing from
the nature of our said invention.
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 :
1. In railway fog signalling apparatus, the sliding piece for exploding the
detonating caps, constructed and acting substantially as set forth.
2. In railway fog signalling apparatus, the revolving table for carrying the
detonating caps, constructed and acting substantially as set forth.
3. The combination of the table D, discs F, runners F, wedge R and guide
rail P, substantially as and for the purposes set forth.
4. The slide piece G and parts connected therewith, in combination with the
table D with its discs F and runners F¹, substantially as and for the purposes set
forth.
5. The combination of horizontal chamber A, piston C, circular table D, discs F
with their runners F, vertically sliding piece G, guide rail P, wedge R, and
plough S, substantially as and for the purposes set forth.
6. The combination of horizontal chamber A, piston C, circular table D, discs F,
runners F1, slide piece G, ratchet H, pawl J, lever K, connecting rod L, lever M,
piston slide A¹, guide rail P, wedge R, plough S, wedge pieces T T, slides U U,
connecting rods V V, and bell crank lever W, all substantially as and. for the
purposes set forth.
7. The combination of the various parts forming our fog signalling apparatus,
substantially as herein set forth, together with any mere modification or modifi-
cations thereof.
Dated this 2nd day of Max 1002