Improvements in Window Screens.
Year: 1898

page_text: Date of Application, 13th Apr., 1898-Accepted, 30th July, 1898
Improvements in Window Screens.
We, WILLIAM ALBERT KRAEMER, Market Gardener, of Williamsport, Lycoming,
Pennsylvania, and WILLIAM HENRY CASSELBERRY, Blacksmith Loyalsack,
Pennsylvania, both in the United States of America, 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:-
Our invention has relation to window screens. The object is to equip each sash
with a screen which when not desired, is concealed within a casing, and which may
be easily engaged with the sash and drawn across the opening of the window
frame when desired.
With this object in view, the invention consists in certain features of construc-
tion and combination of parts which will be hereinafter fully described and
claimed.
In the accompanying drawing,-
Figure 1 is a perspective view of a window frame embodying our invention;
Figure 2 is a longitudinal sectional view; and
Figure 3 is a fragmentary view of one of the screen casings illustrating the
journal block for the screen roller.
In said drawing, 1 denotes a window frame, and 2 and 3 the lower and upper
sashes, respectively. At the upper and lower ends of the window frame are screen
casings 4, having removable fronts 5. The inner sides of the ends of these casings
are provided with transverse guideways 6, which receive blocks :7 that support
spring rollers 8. These rollers 8 are provided with flexible screens 9, the free ends
of which are provided with plates 10 having openings 11. The upper sash has an
arm 12 that projects inwardly, and is curved to form a bearing 13.
14 denotes an operating rod, which has its upper end journaled in said bearing
and its lower end extending downwardly through a guide eye 15, and formed with
a handle 16. The extreme upper end of this rod is provided with a crank 17.
18 denotes a catch which is pivoted to the upper cross-piece of the upper sash,
and is adapted to pass through the opening in the plate secured to the free edges
of the screen.
19 denotes a link that connects the pivoted catch to the crank of the operating
rod. When it is desired to lower the upper sash, and at the same time draw down
the screen and cover the opening in the frame, the operating rod is turned in its
bearings so as to work the catch into the slot of the plate on the lower end of the
screen, and while drawing down upon the rod, the upper sash will be lowered
and simultaneously draw down the screen. If, however, it is desired to simply
lower the upper sash, this may be accomplished by drawing down upon the operat-
ing rod It will thus be seen that the sash may work independently of the screen
The lower cross rail of the lower sash is provided with a recess in which is
pivoted a combined catch and pull 20, which is adapted to be engaged with a strip
at the end of the lower screen for the purpose of drawing the screen up when
desired. A cam 21 may be employed for the purpose of holding the lower sash in
its adjusted position.

page_text: From the foregoing description, taken in connection with the accompanying
drawing, the construction and advantages of our invention will be readily under-
stood without requiring further explanation.
If not desired, the screens may be allowed to remain in their casings, and when
desired to be used, may be easily connected with the sashes, and will be lowered and
elevated in unison with said sashes.
Should it be desired to replace the screens in case they become worn or damaged,
the front piece of the casings are removed, and the slides that support the spring
rollers are withdrawn, thus enabling new screens to be put in place.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:
-
The combination with a window frame, a screen casing, a screen roller in the
screen casing, a screen secured to the roller, the upper sash, a bar extending
inwardly from the upper sash, a catch pivoted to the upper sash, an operating rod
carried by the bar, and a link connecting the operating rod to the catch,
whereby said catch may be caused to engage the screen and draw it down in the
act of lowering the upper sash, substantially as set forth.
Dated this 12th of April 1898.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.