Year: 1886

page_text: I, WILLIAM FORD STANLEY, of Cumberlow, South Norwood, in the County of
Surrey, Engineer, do hereby declare the nature of my said invention to be as
follows:-
This improvement relates to facility and accuracy of focussing consistent with
portability of the camera.
In the class of Cameras known as Kinear cameras used for landscape and
portraiture which have taper bellows Instead of making the front board fixed
to the sliding base board I make the front board movable to set down by a pair
of studs or by a socket fitting either upon the front of the slide base board or near
the back of it.
This enables me to bring either a long or short focus lense at once roughly to
focus,
If the said shifting arrangement does not at once bring the object required
roughly to focus with the lense used and of the dimensions of image desired then
I place in front of the lense an achromatic or simply worked concave or convex
lense in a ring mount which slides directly into the hood of the lense case. This
may if desired screw in.
For the final focus the sliding board has a rack motion or a screw as is usual
with this class of camera but in place of a plain ground glass on which the focus
is taken I use two glasses one quite plain and one with a ground face, the ground
face being behind the plain face I cut a circular hole through the ground glass
near its centre and insert in this hole a focussing glass of small diameter specially
made for this arrangement.-This focussing glass is fixed to the ground glass
and not a separate instrument as usual or it has a screw fitting to the ground
glass by which it can be fixed. Upon the surface of the plain glass under the
opening in the ground glass I paint or etch an arrow or other object by which
I bring the focussing glass to focus with the plain of the ground glass. The whole
of this arrangement is fitted loosely in a groove in the frame of the focussing slide
in such a manner as to permit considerable variation of position to bring the
focussing glass to different parts of the image. The parts of this invention may
be varied by mechanical equivalents. They may be separately used on ordinary
Cameras.

page_text: Improvements in the Focussing Arrangements of Cameras.
I, WILLIAM FORD STANLEY, of Cumberlow, South Norwood, in the County of
Surrey, Engineer, do hereby declare the nature of my said invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
This improvement relates to facility and accuracy of focussing consistent with
portability of the Camera,
In the class of Cameras known as Kinear Cameras used for landscape and
portraiture which have taper bellows.-Instead of making the front board fixed
to the sliding base board I make the front board movable to set down by a pair
of studs in socket fittings, either upon the front of the sliding base board or near
the back of it..
This enables me to bring either a long or short focus lense at once roughly to
focus.
.
If I then find that the said shifting arrangement does not at once bring the
object required while roughly to focus with the lense used of the dimensions of
image desired, then I place in front of the lense an achromatic or simply worked
concave or convex lense in a ring mount, which slides or screws directly into the
hood of the lense case, which at once changes the magnitude of the image.
The final focussing of the sliding board will be by means of a screw, which is
jointed to separate by a fitting in the axis of the hinges, or this may be done in
the ordinary way by a rack and pinion.
In place of a plain ground glass to receive the image, I use two glasses, one quite
plain, and one with a ground face; the ground face being behind the plain face.
I cut a circular hole through the ground glass near its centre, and insert in this
hole a focussing glass in the form of an eye piece of small diameter, specially made
for this arrangement. This focussing glass, or eye piece, is fixed to the ground
glass, and not made a separate instrument as usual; or it has a screw fitting to the
ground glass, by which it can be so fixed. Upon the surface of the plain glass
under the opening in the ground glass, I paint, etch, or mark, an arrow, or other
object, by which I bring the focussing glass to focus with the plain of the ground
glass; the plain glass need not extend farther than the diameter of the hole in the
ground glass. The piece of ground glass is fitted loosely in a groove in the frame
of the focussing slide in such a manner as to permit considerable variation of
position to bring the focussing glass upon different parts of the image. The parts
of this invention may be varied by mechanical equivalents. They may be
separately used on ordinary Cameras.
The drawing fully illustrates the details of this invention.
Fig. 1 represents the section through the Camera. The movable studs are
shown at A A¹.
A being the near position and A¹ the distant position. The frame in this latter
position is shown by dotted lines-The lense with false front to adjust size of
image is shown attached to lense at B. The eye piece focussing glass is shown
at C. The screw adjustment is shown at D.
Fig. 2 show the front with studs A A in detail

page_text: Fig. 3 shows the elevation of focussing screen with end section of eye piece c and
Borew D.
Fig. 4 is section of Fig. 3.
Fig. 5 shows the lense with the front B detached full size for half plate.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is
1. The movement of the front of a camera roughly to focus by placing it in
different positions on the sliding board by means of studs and sockets.
2. The lengthening or shortening of the focus, and consequently changing the
size of the image, by means of a surplus lense to be put before the ordinary lense.
3. The finding of the exact or final focus of portraits and landscapes upon a
surface of plain glass when a part of the ordinary ground glass surface is cut away
by an eye piece fixed over the hole in the ground glass. This eye piece being
movable to different parts of the image as described.
4. Adjusting the above described parts to exact focus by means of a screw as
shown on drawings.

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