An Addition to or Appliance for Buildings or Structures for Enabling the Interiors of Rooms or Compartments to be Observed from another Room or Compartment or Place Exterior to such Rooms or Compartments.
Year: 1888

page_text: Date of Application, 31st May, 1888
Complete Specification Left, 23rd Oct., 1888
Complete Specification Accepted, 30th Nov., 1888
An Addition to or Appliance for Buildings or Structures for
Enabling the Interiors of Rooms or Compartments to be
Observed from another Room or Compartment or Place Exterior
to such Rooms or Compartments.
I GEORGE CECIL FARR of 44 Ship Street Brighton in the County of Sussex
Architect do hereby declare the nature of this Invention to be as follows:-
My Invention has for its object to provide an addition to or appliance for buildings
or structures (such as houses or ships for instance) whereby the interiors of rooms or
compartments can be observed from another room or compartment or place exterior
to such rooms or compartments for example in a factory the various workrooms can
be observed by the manager from his room without his leaving it.
According to my Invention I provide passages or trunks from each room to be
inspected and leading to the place whereat the rooms are to be under inspection.
These passages or trunks have openings at a convenient position for receiving a view
of the room and at each of these openings in the passage or trunk is a mirror or
reflector set at a proper angle for receiving rays of light from and consequently the
image of the interior of the room and transmitting then along the trunk or passage
to a mirror or reflector opposite the opening in the passage or trunk at the place
whore inspection is made.. There may be in the passages or trunks bends or angles
provided with intermediate mirrors or reflectors for transmitting the rays from one
direction to another at angles, where the situation of the rooms necessitates such bends
or angles. Where the place of inspection situated between rooms or compartments
to be inspected the mirror or reflector at the place of inspection may be constructed
so as to be capable of being moved into position for receiving the
from any
rays
direction and where the same passago or trunk is to be used for conveying the rays.
from several rooms the mirrors or reflectors may be hinged or otherwise arranged so
that they can be turned up out of use or he turned down when the room to which they
appertain is to be inspected and they may be operated for this purpose by cords wires
or other appliances which are led into the manager's room or other place of
inspection.
Dated this 21st day of No 1988
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C.,
Agents for the said George Cecil Farr.

page_text: Enabling the Interiors of Rooms or Compartments to be
Observed from another Room or Compartment or Place Exterior
to such Rooms or Compartments.
I, GEORGE CEOIL FARR of 44 Ship Street, Brighton in the County of Sussex,
Architect, 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
I
My Invention has for its object to provide an addition to or appliance for buildings
or structures (such as houses or ships for instance) whereby the interiors of rooms or
compartments can be observed from another room or compartment or place exterior to
such rooms or compartments for example in a factory the various workrooms can be
observed by the manager from his room without his leaving it. According to my
Invention provide passages or trunks from each room to be inspected and leading
to the place whereat the rooms are to be under inspection. These passages or trunks
have openings at a convenient position for receiving a view of the rooms either directly
or by the intervention of a reflecting adjustable mirror and at each of these openings
in the passage or trunk is a mirror or reflector set at a proper angle for receiving rays
of light from and consequently the image of the interior of the room or of part of such
interior and transmitting them along the trunk or passage to a mirror or reflector
opposite the opening in the passage or trunk at the place where inspection is made.
There may be in the passages or trunks bends or angles provided with intermediate
mirrors or reflectors for transmitting the rays from one direction to another at right
angles where the situation of the room necessitates such bends or angles. Where the
place of inspection is situated between rooms or compartments to be inspected the
mirror or reflector at the place of inspection may be constructed so as to be capable of
being moved into position for receiving the rays from any direction and where the
same passage or trunk is to be used for conveying the rays from several rooms the
mirrors or reflectors may be hinged or otherwise arranged so that they can
be turned up out of use or be turned down when the room to which they
appertain is to be inspected and they may be operated for this purpose by cords
wires or other appliances which are led into the managers room or other place of
inspection.
And in order that my Invention may be well understood I will, describe with
reference to the accompanying drawings a manner in which the same may be carried
into practical effect.
Figure 1 is a vertical section of a building shewing 3 rooms B C and D to be
inspected and one room A from which the inspection is to be made.
E is a tube or passage projecting into the room A in any convenient position to
bring an opening e in it into convenient position for the inspector. It is shewn as

page_text: projecting above a table fat which the inspector can when seated look into the
aperture e. The tube or passage E communicates with a tube or passage G leading
to the room B and there provided with an opening at g for receiving an image of the
interior of the room. This image is received upon a mirror and is reflected
successively to and from the mirrors g³ gʻgʻ and gª and is finally reflected in the
mirror e at which therefore the inspector at the table f receives an image of the
interior or part of the interior of the room B. In order to reduce the size of the tubes
or passages E and G the mirrors may be of such a size that they will receive only an
image of a part of the room at one time but to in this case enable any part of the room
to be inspected I may provide at h an adjustable mirror which can be turned in any
direction. This can be provided for (as shown in the detail view of such adjustable
mirror in Figure 2) by furnishing the mirror with three frames h³ ³ and h. The
frame can turn in the frame h³ upon the horizontal centre pins whilst the frame /³
can turn in the frame h* upon the vertical centre pins j. By leading chains or cords
from the table fover pulleys or guides and attaching one to the frame h² and the
other to the frame the mirror / can be turned so as to take any desired position to
receive an image of any part of the room and this is the image which is thrown upon
the mirror g². Or I may use in place of this moveable mirror a stationary convex
mirror which will reflect the whole or any desired part of the room on a reduced
scale.
In case it may be desired to make a more minute inspection (for example if it be
desired to read anything in the room B) the inspector may look at the image received
on the mirror 2 by means of a magnifying glass K which may be fixed in the opening
at e as shewn in Figure 3. The foregoing is the simple arrangement for inspecting
one room from another. If it be desired to inspect two or more rooms the additional
rooms are provided with tubes or passages and mirrors as explained with rogard to the
room B and those mirrors which would otherwise intercept the view of the additional
room or rooms are mounted upon centres so that they can be swung to one side to open
the tubes leading to the particular room to he inspected and close the other or others.
As shown in the drawing the tube or passage L opens into the tube or passage E and
has in it an opening at provided with a mirror by which an image of the room or
part of the room C is obtained it being reflected on to the mirror e² the mirror gⓇ being
turned back into the position shown in dotted lines so as to close the tube or passage &
and open the communication between the tubes or passages Land E.
The tube or passage L has also an opening at opposite which is the mirror for
receiving an image of the room or part of the room D and transmitting it to the
mirror when the mirror (as well as the mirror 9°) is thrown back as shown in
dotted lines I have shown adjustable mirrors h in the rooms C and D like the one in
the room B. The mirrors go and which have to be swung back can be operated
like the mirrors h by chains or cords passing over pulleys or guides and each of them
both for the mirrors and the mirrors go and can be operated from any convenient
place in the room from which the inspection is made for example by an arrangement
like an ordinary bell pull one for each mirror which is to be moved. One of these is
shown at m the movement being multiplied by the lever m².
It will be evident from the foregoing description that my invention can be applied
similarly to any desired number of rooms.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
First. In or for buildings or structures an appliance for enabling a room-or-either
of any desired number of such rooms or part of such rooms to be observed from a
place external to such room or rooms substantially as herein before described.
Second. In or for buildings or for structures the combination of a tube or passage
leading from a room or place to be inspected to the room or place at which the inspec-
tion is to be made and provided with reflectors or mirrors substantially as hereinbefore
described.

page_text: Third. In or for buildings or structures tubes or passages leading from two or more
rooms or places to be inspected to the room or place at which the inspection is to be
made, the said tubes or passages being provided with reflectors or mirrors which, or
some of which, can be turned so as to establish communication with, either of the
places or rooms to be inspected as desired, substantially as hereinbefore described.
Fourth. The combination with the subject matter of either of the preceding claiming
clauses of an adjustable mirror or adjustable mirrors (4) and of a magnifying glass (K)
or either of them substantially as herein before described.
Fifth. The apparatus arranged as and for the purpose hereinbefore described and
illustrated in the accompanying drawings.