Improvements relating to Apparatus for Use in Connection with Clocks for Displaying Advertisements.
Year: 1889

page_text: Date of Application, 18th May, 1889-Accepted, 29th June, 1839
COMPLETE SPECIFICATION.
[Communicated from abroad by JOHANN SCHREIBER, of Neustadt (Baden); in the
Empire of Germany.]
Improvements relating to Apparatus for Use in Connection with
Clocks for Displaying Advertisements.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake, and Co. Patent Agents,
Southampton Buildings, in the County of Middlesex 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 relates to apparatus designed for use in connection with clocks for
the display of advertisements.
The improved apparatus constructed according to the aforesaid invention is
represented in the accompanying drawing referred to in the following description.
Upon the shaft W is arranged a prismatic frame.
The sides of the prism, which may be octagonal, are covered with silk and upon
this are pasted the advertisements for the public.
The shaft W can be prolonged upwardly in order to show pictures, figures, or the
like above and it is turned from time to time through one division by the mechanism
hereinafter described.
The spring box H has at one end a bevel wheel R¹, which engages directly with
the bevel wheel R upon the rotary shaft W. Its action may be prevented by the
engagement of the bevel wheel g.
The latter bevel wheel is fixed upon the shaft D to which the pins or levers 1, 2, 3
and 4 are secured.
Upon the shaft D is moreover arranged the loose spring box F for which D serves
as a spring arbor.
The draw spring in F is fixed in such a manner that when it is under tension the
wheel arranged upon the stop shaft a is turned in the direction indicated by the
arrow (Figure 2).
The said stop shaft a is made of peculiar shape opposite each of the levers 1, 2, 3
and 4, being an incision extending over three quadrants of the full cross section
of the shaft.
The remaining full quadrants a, a, a, a, are placed one relatively to the next at an
angle of 90 degrees so that in the position shown (Figure 1) the lever bears
against the cylindrical surface of the first full quadrants until a has turned through
90 degrees.
As soon as the pin or lever 1 leaves the quadrant the shaft D is caused to turn
through 90 degrees under the action of main draw spring in the spring box H, and
consequently the shaft W will also turn through say 45 degrees, which is equal to
one-eighth of a revolution.
By appropriately proportioning the wheels R and g the number of movements
which the shaft W makes in one revolution can be determined at will.
By this rotation the auxiliary spring in the spring box F is wound up, and the
clockwork proper is thereby kept in motion until in the next disengagement the spring
is again wound up.
The shaft a which for example may make one revolution in twenty minutes, is
rotated through the engagement of the toothed wheel with the wheel F.
Above the minute-wheel is arranged the transmitting gear connected with the
balance or the escapement as in ordinary clockwork.
The dial-work is actuated through the medium of the wheels m t and transmitting
gear T.

page_text: As the dial-work is placed at some distance from the clock-work a hook joint is
used to enable the movement to be transmitted to a higher or lower point.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by my
foreign correspondent, I declare that what I claim is :-
An advertising clock characterized by the disengagement of the pins or levers 1, 2, 3
and 4 from the segments a,, a₂, a3, a, a shaft W making partial revolutions by reason
of the pressure of the spring H transmitted through bevel wheels, whilst every time,
through the corresponding partial revolution of the shaft D (carrying the said pins or
levers 1. 2, 3, and 4) a second spring F is wound up that keeps a clockwork in motion
which actuates the shaft a.
Dated this 18th day of May 1889
HASELTINE, LAKE, &. Co.,
45, Southampton Buildings, London, Agents for the Applicant.