Improvements in and relating to Window Sashes.
Year: 1899

page_text: Date of Application, 16th Jan., 1899-Accepted, 4th Mar., 1899
COMPLETE SPECIFICATION.
Improvements in and relating to Window Sashes.
I, BERNARD HAUSMANN, of 220, Grant Avenue, in the City and County of San
Francisco, State of California, U.S.A., Merchant, 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:-
My invention relates to a mechanism for sliding window sashes and means for
disengaging such sashes so that they are turnable about hinges to swing inwardly
for the purpose of obtaining access to the outside of the sash and for other reasons.
It consists in a means for automatically locking the slide to which the sash is
hinged into the window casing or pulley stile when the sash is opened, and
similarly unlocking the slide to allow it to move vertically after the sash has been
closed.
It also comprises an improved means for arresting and locking the slide against
which the sash closes upon the opposite side, to prevent its being carried up by the
counterweight when the sash has been disengaged from it, and details of construc-
tion which will be more fully explained by reference to the accompanying
drawings, in which—
Figure 1 is a view of the window showing the lower sash open. Figure 2 is a
horizontal section of the window showing both sashes and attachments in plan.
Figure 3 is a section showing the automatic locking device upon the hinge side
and recess in pulley stile. Figure 4 is a perspective view of the locking hook of
said device. Figure 5 is a perspective of the edge of the sash showing the hook to
engage the slide at the detachable end. Figure 6 is a view of the upper part of the
slide and the device for arresting the same. Figure 7 is a view showing the
construction of the hinged slide and the tongue Q.
When the sash is cpened it is desirable to give support to the slide upon the
opposite or hinged side to prevent the greater weight of the sash, having then only
one counterbalance weight acting upon it, from pulling it down so that the sash
will not rest upon and scrape or deface the window sill, and also to lock and hold
the sash against sagging when the sash is opened.
A A are the pulley stiles, B the parting strips between which and the exterior
stops the upper and lower sashes slide.
The sashes D are hinged as shown at E, to vertically movable slides F, and
these slides are retained in place so as not to be pulled out by the weight of the
sashes when the latter are opened, by having their opposite edges so formed as
to be engaged and held in place by the parting strip B and the stops outside of the
sashes which have tongues or projections G to engage with the slides, and thus
revent the weight of the sash when opened from pulling the slides bodily away
from the pulley stile, but they are at the same time allowed to move freely in
vertical direction when it is desired to raise and lower the sash.
The slides F upon the opposite side, against which the edge of the sash closes
are provided with loops H as shown in Figs. 1 and 6, and the edge of the swinging
ash D is provided with downwardly turned hooks I, which by the slight lifting

page_text: of the sash are brought directly over the loops H and allowed to drop so that the
sash and slide are at once firmly interlocked.
The counterbalance cord lies in a vertical groove of the slide facing the pulley
stile.
When the sash is to be opened about its hinges, it is necessary to first lock
the slide F to prevent its being forced to the top of the window by the counter-
weight connected with it, after the sash has been disengaged from the slide.
The upper part of the slide F¹ has transverse channels L as plainly shown
in Fig. 6.
M is a yoke-shaped piece of metal slidable transversely in and from a recess
made for it in the pulley stile. This yoke has the oppositely turned lugs M¹
on its outer ends, and when the yoke has been pulled out so that these lugs project,
as shown in Fig. 6, the transverse channels L of the slide F, will engage with
these lugs and will thus lock the slide F¹ to hold it in place and prevent its
moving upwardly.
When the sash has been closed and engaged with the slide Fit is released from
the interlocking lugs M by pulling it down. The yoke M is then pushed back into
its recess in the pulley stile to be entirely out of the line of travel of the closed
sash, which is free to move vertically and in unison with the slide F¹.
Within the opposite slide F is formed a chamber O extending through the
thickness of the slide and within this chamber is fulcrumed a hook P having a
tongue Qprojecting at the lower end and in the opposite direction from the
hook P at the upper end.
A vertical recess R is made in the pulley stile, the upper end of the recess
gradually decreasing in depth until it merges into the face of the pulley stile
as shown at r.
R is a plate fixed flush with the pulley stile and across the lower end of this
recess in such a position that when the hook P is released, it will drop over and
engage the plate R¹ by gravitation.
When the sash is in its normal position closed between the slides FF, this hook
lies within the chamber () and presents no obstacle to the sliding of the sash,
being held in its vertical position by the contact of the closed sash with the
tongue Q at the lower end of the hook P.
Το open the sash about its hinges it must necessarily be underneath the yoke M
which is then pulled forward until its lugs M are in line with the transverse slot L
on top of the slide F¹.
The sash is then moved up until the slot L engages the lugs M, thus holding it
in place and preventing the slide from moving upward any farther when disengaged
from the sash, the counterweight retaining these parts in engagement.
By the momentum of the upward movement of the sash, or a slight lift thereon,
the hook I is disengaged from the loop H of the slide F¹ and the sash is then
opened inwardly.
The hinged slide Theing raised simultaneously, the locking hook P is thus
brought somewhat above the plate R¹ in recess R in pulley siile, and will quickly
drop over from its vertical position by its own weight and lock into the plate Ri,
all check upon the lower end Q being removed by the part separation of the sash
end from the slide F in turning the sash inwardly.
This locks the sash instantly into the pulley stile upon the one side by the very
act of unlatching it upon the opposite side and opening it inwardly.
When the sash is to be closed it is turned about its hinges toward the slide F¹,
and raised sufficiently to allow the hooks I to drop into the loops H on the slide F¹.
The hook P upon the hinged slide F is by this slight upward movement released
from its hold on plate R₁ and fored back into its vertical position in the
chamber 0 by its contact on the one side with the upward tapering form or curve P
of the recess in the pulley stile, and also by the contact of its projecting tongue Q
upon the opposite side of the slide F with the edge of the sash, which closes in
against it.

page_text: The plate R¹ is placed at a sufficient height in the pulley stile to hold the
sash a short distance above the window sill, and will thus allow it to turn freely
about its hinges without scraping upon or defacing the window sill.
Both upper and lower sashes are operated in the same manner, it being necessary
to first open the lower sash after it has been raised to the point of contact with the
projecting yoke M, then the upper sash is pulled down to the sill and then opened
by the same operation.
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:-
1st. In a window sash, guided, grooved and shaped slides, to one of which one
edge of the sash is hinged, a hook or hooks upon the opposite edge of the sash,
and corresponding loops upon the lide with which the hooks engage when the
sash is closed, a means for retaining in place and preventing the slide from moving
upwardly when the sash has been disengaged therefrom, consisting of a stop or
channel upon the slide and a yoke horizontally slidable in the pulley stile so as
to engage with said stop or channel or be disengaged therefrom, substantially as
described.
2nd. In a window, guided, vertically movable slides, hinges by which the
sash is connected with one of said slides, a hook fulcrumed in said slide, a recess
in the pulley stile, and a plate fixed at the lower end of the recess, with which said
hook engages when the sash is opened to prevent downward movement of the
slide and sash, substantially as described.
3rd. In a window sash, guided, vertically movable slides, a sash hinged to
one of said slides, means for locking the opposite edge of the sash in engagement
with the opposite slide, and a gravity hook fulerumed in the slide to which the
sash is hinged, having a tongue extending from the lower end with which tongue
the sash contacts when closed so as to retain the hook within the slide, a plate
fixed in the pulley stile with which plate the hook automatically engages when
the sash is opened about its hinges, substantially as described.
4th. In a window sash, guided, vertically movable slides, a sash hinged to
one of said slides, means for locking said slide to the pulley stile when the sash is
opened about its hinges, and means for holding the opposite slide in place con-
sisting of a yoke slidable transversely in a recess in the pulley stile and a stop
or channel upon the vertical slide with which said yoke engages when extended,
substantially as described.
Dated this 29th dove of nasal
1000
BERNARD HAUSMANN.
Gedge & Feeny,
Chartered Patent Agents, 60, Queen Victoria Street, London.