Year: 1887

page_text: Date of Application, 29th Sept., 1887
Complete Specification Left, 28th June. 1888
Complete Specification Accepted, 29th Nov.. 1888
GEORGE SLATER Stationer 54 Snig Hill Sheffield Yorkshire do hereby declare
the nature of this inventon to be as follows:-
In the construction and adaptation of a pair of dials, or scales, as the circumstances
may demand one placed on the inside, and the other on the outside of a door, wall, or
partition, whereby the occupant of the room has simply to indicate by means
of the pointer on the inside dial, the time at which he desires to be called and which
simultaneously indicates the same on a dial without the room. The dials are made
of wood, glass, porcelain, metallic or any suitable material. The points of my
patent are:-
1st. The adaptation of apparatus for the purpose named.
2nd. A revolving indicator one one dial and a fixed indicator on the other.
3rd. One revolving dial and one stationery dial.
4th. A wheel arrangement whereby both indicators may revolve and in the same
direction, as the hands of a clock.
5th. The application of a rack, and pinion movement whereby the indicators
are moved vertically up and down a scale on which the hours and quarters are
marked.
Dated this 28th day of September 1887

page_text: GEORGE SLATER Stationer 54 Snighill Sheffield Yorkshire 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 :-
In the construction and adaptation of a pair of dials, or scales, as the circum-
stances may demand, one placed on the inside and the other on the outside of
a door, wall, or partition whereby the occupant of the room has simply to indicate
by means of the pointer on the inside dial, the time at which he desires to be called
and which simultaneously indicates the same on a dial without the room.
The
dials are made of Wood, Glass, Porcelain Metallic, or any suitable material.
The points of my Patent are-
1st. The adaptation of apparatus for the purpose named.
2nd. A revolving indicator as shewn at A on drawing on one dial, and a fixed
indicator as shown at B on drawing on the other.
3rd. One revolving dial B, and one stationary dial A.
4th. A wheel arrangement whereby both indicators may revolve and in the same
direction as the hands of a clock.
One dial is fixed on the inside of room door through which tube F in section A
is inserted, revolving on a disc as shown at D Fig. 3 and moved by thumbscrew L
as shown in A Fig. 3 at end of tube F. An indicator fixed on tube F revolves
with it. The second dial B Fig. 2 on drawing fixed on the out side of a room
door has a similar rotating disc, as shown at D section B Fig. 3, in the centre
of which is fixed a square spindle as shown at E Fig. 3 & 6 one end of which
is fixed to a dial as shown at K in section B Fig. 3, the other end passes through
a square hole in tube F as shown at clivation G, when tube F revolves, the disc K
Fig. 3, will move in the same direction as the fixed pointer on tube F, there-
forc if pointer on dial A Fig. 1. is moved to fig. 5, that portion of the out side
dial B will be brought opposite to the fixed pointer B Fig. 2. indicating Fig. 5.
The rotating disc revolve in circular recesses as shown in sections Figs.
These working parts are inclosed in glass faced covers as shown at A & B
Fig. 1. & 2.
or 5.
In wheel arrangement the revolving dial K Fig. 3 or 5 is replaced by a re-
volving indicator J Fig. 4, & fixed to rotating disc as shown at H Fig. 4. The
spindle E is in two parts connected by tooth wheels as shown at I Fig. 4. which
enables the indicator to revolve in the same direction as the hands of a clock.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1st. In the construction of a Calling up Dial consisting of a pair of Dials with
pointers placed inside and outside of a door, wall, or partition, to indicate the
time to be called.
2nd. In the Construction of a Calling up Dial as herein before specified and
described and as illustrated by the accompanying drawings.