Machine to Indicate at a G the any Periodical Event, and.
Year: 1893

page_text: Date of Application, 13th Dec., 1893
Complete Specification Left, 8th Sept., 1894-Accepted, 13th Oct., 1894
PROVISIONAL SPECIFICATION.
A Machine to Indicate at a Glance the Time of the Occurrence
of any Periodical Event during the Day, and of its Next
Occurrence.
1 HENRY PREVOST BABBAGE, of Mayfield, Lansdown, Cheltenham, Major
General H. M. Army, do hereby declare the nature of this invention to be as
follows:-
-
The invention consists of a box with two windows in front, through one of which
is shown the time of the last occurrence and through the other the time of the next
occurrence expected :-for example, the starting, or the passing, of an omnibus ;
the clearance of a postal pillar box; the performance of an entertainment, or other
thing repeated periodically during the day.
On slips of paper are printed the times fixed for the occurrence and these are
fastened round cylinders or drums, behind the two windows. These drums are
geared together and move in unison, and are turned by means of a key. as
required.
I will now describe the mechanism with reference to the drawings.
There are two plates with four figures; the same letters are used throughout for
the same piece. Upright capital letters as A. B. C. denote framework or fixed
pieces. Slanting capital letters as A. B. C denote moveable pieces and small letters
as a, b, c denote working points as a pall, a roller, a spring &c.
Figure 1. Plate I shows the front of the box as arranged for omnibus traffic.
The hand or pointer is fixed on by two screws, so as to be reversible when
required.
Figure 3. Plate II shows the side elevation with frame plate removed.
Z is the outer wooden case. E shows the frame plates, which are tied together
by the frame rods X, X, X. F and L are the two drums, attached to the cog
wheels H and M and geared together by the toothed wheel A. Attached to A
and on the same axis N are a rosette wheel B and a ratchet wheel C and loose on
the same axis is an arm D carrying a pally and pulled by the spring d against the
piece T. The arm I carries a roller f, which is forced by the spring e against the
rosette wheel B bringing it correctly home each time it is moved, so as to show
the figures on the drums symetrically at the windows.
When it is required to change these, the key is inserted on the pivot S and a
quarter turn being made, the shaped camb T forces the arm D against the stop a,
while the pall g carries the ratchet wheel C forward one division and with it the
two drums F and L.
On the key being withdrawn the camb T is pulled back by the spring c against
the stop 6 and the arm D is pulled back by the spring d and all is ready for the
next change when required.
Dated this Twelfth day of December 1893.

page_text: A Machine to Indicate at a Glance the Time of the Occurrence
of any Periodical Event during the Day, and of its Next
* Occurrence.
I HENRY PREVOST BABBAGE of Mayfield, Lansdown, Cheltenham a Major
General in Her Majesty's Army 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 invention consists of a box or case with two windows in front, through one
of which is shown the time of the last occurrence and through the other the time
of the next occurrence expected :-for example, the starting, or the passing of an
omnibus ; the clearance of a postal pillar box; the performance of an entertain-
ment; or other thing repeated periodically during the day.
On slips of paper are printed the times fixed for the occurrence and these are
fastened round the cylinders or drums behind the two windows. These drums are
geared together and move in unison and are turned by means of a key as
required.
1 will now describe the mechanism with reference to the drawings.
Figure 1 is a front elevation of the exterior of the machine.
Figure 2 is a plan, showing the outer iron case in section through the axis of the
upper drum and the centre line of a window.
Figure 3 is a front elevation from the right hand: showing the outer iron case in
section through the axes of the two drums.
Figure 4. is a side elevation from the right hand showing the outer iron case in
section through the centre.
•
Figure 1 shows the exterior of a machine arranged for an omnibus passing a
particular spot every half hour during the day in one direction: for the other
direction there would be a separate machine with the hand on the front turned.
This hand is made reversible to suit either way. The slips of paper showing
the times are printed to suit each place and can of course be changed when
desired. The conductor of each passing. bus would apply his key and move the
drums to show the next figure.
A is the key-pin (Figs. 3 and 4) which has a square end to receive the key and
a shaped camb B fixed on it: this being turned a quarter circle pushes the arm I
of the bent lever I H till it comes against the stop T and can go no further. The
other arın H carries a pall a, which advances the ratchet wheel F one tooth and this
being fixed as one piece to a spur tooth wheel D on the same axes C carries the
two spur tooth wheels K and L in gear with it through the same angle, together
with the two drums M and N which are attached to them (see Figs. 3 and 4).
The conductor then withdraws the key and the spring c pulls the shaped camb B
back to its initial position against the stop S, while the spring d keeps the arm 1
of the bent lever H I against the shaped camb B till both are brought to rest by
the stop S. The roller b on the arm P, which is pulled by the spring e, works on
the rosette wheel E and prevents the whole combination being disturbed by the
reflex motion of the pall a. A small frame plate Y fixed to the frame piece X by
means of two screws in the stops S and T gives a back support to the key-pin A
and the frame piece X is held by screws to zinc plate Z which fits into the back of
the outer iron case. The whole is fixed to a wooden post, or other suitable thing by
attachments at the top and bottom as shown in Figure 1.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner it is to be performed, I declare that what I
elaim is-
The combination of all the pieces together and of each piece with each other
piece, as shown in the drawings and described above, and adapting all to the
purposes herein specified.
Dated this 8th day of September 1894.
HENRY P. BABBAGE.