Improvements in Lorgnettes and such like Instruments.
Year: 1890

page_text: Date of Application, 8th Apr., 1890-Accepted, 10th May., 1890
COMPLETE SPECIFICATION.
Improvements in Lorgnettes and such like Instruments.
I, JAMES GREEN, of Burwood near Sydney in the Colony of New South Wales,
Jeweller, 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 lorgnettes or opera-glasses and such like instruments for
viewing distant objects and it has been devised specially to produce a lorgnette or opera
glass by which without changing position persons and objects behind or to the side of
the user may be observed.
These improvements in lorgnettes and such like instruments consist first in the
combination and arrangement with and in front of either object glasses of a lorgnette
or binocle or with and in front of the object glass of a telescope of an adjustable mirror
in which the user of the binocle or telescope may observe reflections of objects behind
and around him. These improvements consist secondly in the peculiar methods of
adjusting the position of the mirror relative to the central line of the instrument and
of adjusting the angle or plane of the mirror relative to the plane of the object glass
and they further consist in the particular combinations and arrangements of mechanical
parts hereinafter described and claimed.
But in order that this invention may be clearly understood I will now describe in
detail with the assistance of drawings how I apply my improvements to lorgnettes or
opera glasses and from such description it will readily be seen by those skilled in the
art to which this invention pertains how the improvements may be applied if required
to other binocles or to telescopes. In the drawings herewith Figure 1 is a sectional
elevation of a lorgnette or opera glasses having my improvements attached. Figure 2
is a plan and Figure 3 an end view of the same respectively.
A A are telescopic opera glasses. BB are mirrors or reflectors. C is blank or
shutter. A A' are eye glasses. A' A' object glasses. A focus screw. A+ plate or
carrier. A' angle plate. A slot therein. A holding down plate. B₁ is carrier
plate. B³ radial plate pivotted at B³. B' hinge. B' sector wheel. Be stay. B' slot
with teeth B³. B hinge. B guide or staple. Cis frame. C attachment end.
Chinge. C thumb screw. C spring. C toothed wheel. C' toothed pinion.
Cpin.
When in use the mirrors or reflectors B and connections are carried by plate or
carrier A' with the attachment end of frame C¹ passed through the slot A' in the
angle plate A and then under the holding down plate A'. The frame (and the
mirrors or reflectors B are thus held securely in position behind the object glasses A'
and an observer is enabled to sit with his back to the objects he wishes to view and see
them reflected in the mirrors or reflectors. The focus of the binocle is adjusted in the
usual way by manipulation of the focus screw A. The adjustment of the position
of the mirrors with the central line of the instrument or the radial position is effected
by turning thumb screw (thereby causing the toothed wheel C to turn the sector
wheel B and move the plate B' round on pivot B' until the reflectors have attained
the required position to include the desired objects. The angle or plane of the mirrors
relative to the plane of the object glasses is adjusted by pressing the thumb screw C
upwards to compress spring C and lift the toothed wheel C out of gear with the
sector wheel B' causing pinion C to enter slot B' its teeth to gear with the teeth B³
on said slot; now when the thumb screw is turned the pinion C7 in teeth B³ causes
stay Be to move backwards or forwards with the bearer plate to which it is attached
and so increase or diminish the angular set of the mirrors or reflectors. When not in
actual use the mirrors or reflectors and connection are separated from the lorgnette by
withdrawing attachment end C from slot A and plate A' and disengaging stay B
from guide or staple B" folding the mirrors on hinge B and the blank or shutter C
n.

page_text: on hinge C when the whole is in a flat position and may be snugly placed in a com-
partment made in the ordinary lorgnette case.
It is to be understood that I do not confine myself to the precise details herein
described and shown nor to any particular method of carrying my invention into
practice so long as the nature of my invention be retained.
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
19:-
First. The combination and arrangement with a lorgnette or binocle and with a
telescope of a mirror or reflector in front of either object glass or the object glass
thereof substantially as herein described and explained.
Second. The combination and arrangement with a lorgnette or binocle and with a
telescope in front of either object glass or the object glass thereof of a mirror or
reflector adjustable angularly with the central line of the instrument and adjustable
angularly to the plane of said object glass substantially as herein described and
explained.
Third. The combination and arrangement with a lorgnette or binocle of a pair of
mirrors or reflectors such as B a hinged bearer such as B' a stay such as Be passing
through a staple such as B10 and a toothed pinion such as C adapted to gear with and
give motion to such stay substantially as herein described and explained and as
illustrated in the drawing.
Fourth. The combination and arrangement with a lorgnette or binocle of a pai. of
mirrors or reflectors such as B a pivotted carrier such as B a toothed sector wheel
such as B on such carrier and a toothed wheel such as C substantially as herein
described and explained and as illustrated in the drawing.
Fifth. An improved lorgnette or opera glass having fixed or removable attachments
constructed substantially as herein described and explained and as illustrated in the
drawings.
Dated this Twenty-first day of February One thousand eight hundred and ninety
Haseltine, Lake & Co.,
JAMES GREEN.
45, Southampton Buildings, London, Agents for the Applicant.