Improvements in Holders for Sliding Sashes and Shutters.
Year: 1890

page_text: Date of Application, 18th Sept.. 1890
Complete Specification Left. 18th June, 1891-Accepted, 18th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in Holders for Sliding Sashes and Shutters.
I, ALBERT PAUL, of No. 77A, Potsdamerstrasse, Berlin, Prussia, Engineer, do
hereby declare the nature of this invention to be as follows:-
My invention relates to holders for sliding sashes and shutters, and the improve-
ments consist in new means for securing the sashes or shutters in any desired
position, and for preventing them from becoming loose and dropping and also from
jarring in consequence of concussions acting on the same, as in railway carriages.
For this purpose notches are cut into the jambs in which the sash or shutter
slides, and to the latter are pivoted pawls adapted to engage in the said notches, the
pawls being so arranged that, when they are in engagement with the notches, the
weight of the sash or shutter will operate to press the pawls into the notches.
These pawls are provided with a mechanism for withdrawing them from the notches
and engaging them therewith by hand; such as a rotative knob on the sash or shutter
and rods jointed to the pawls and eccentrically pivoted to the knob or to a collar or
plate integral therewith. Moreover, for preventing a jarring of the sash or shutter,
the projections constituted by the aforesaid notches are bevelled on their faces and
the pawls are formed at their ends to correspond to the said bevelled faces, the sash
or shutter being thereby pressed against the inner or outer surface of the groove in
which it slides, according as the projections are bevelled inwardly or outwardly.
Dated the 18th day of September 1890.
J. H. JOHNSON & Co.,
Agents.
COMPLETE SPECIFICATION.
Improvements in Holders for Sliding Sashes and Shutters.
I, ALBERT PAUL of No. 77A Potsdamerstrasse, Berlin, Prussia, Engineer 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 means for securing sliding sashes or shutters in any
position and preventing them from rattling.
For this purpose notches or recesses are cut in the jambs or grooves in which the
sash or shutter slides and to the latter are pivotted pawls capable of engaging in
the said notches and which may be so arranged that when they are in engagement
with the notches the weight of the sash or shutter will operate to press the pawls
into the notches. These pawls are provided with a mechanism for withdrawing
them from the notches and engaging them therewith by hand such as a rotative
knob on the sash or shutter and rods jointed to the pawls and eccentrically pivoted
to the knob or to a collar, plate or disc connected therewith. Moreover for
preventing jarring or rattling of the sash or shutter the surfaces of the notches are
bevelled or inclined and the pawls being formed to correspond to the said bevelled
surfaces the sash or shutter is enabled to be pressed against the inner or outer
surface of the groove in which it slides according as the projections are bevelled
inwardly or outwardly.
And in order that my said invention may be fully understood I shall now proceed
more particularly to describe the same and for that purpose shall refer to the several
figures on the annexed sheet of drawings the same letters of reference indicating
corresponding parts in all the figures.

page_text: Figure 1 of the accompanying drawings is a front elevation partly in section of a
railway carriage window provided with holders according to my invention the
window being partially opened, and portions of the frame represented as being
broken away in order to show the pawls engaged in the notches.
Figure 2 is a part elevation of the same showing the pawls or catches disengaged
from the notches.
Figure 3 represents a horizontal section on the line 1, 1 Figure 1.
Figure 4 represents a section taken along the line 2, 2 Figure'l and drawn to an
enlarged scale.
The sash a slides in the carriage door frame b, the vertical pieces c of which are
provided with recesses or notches for the reception of the pawls or catches d.
These latter are pivotally arranged in the upper corners of the window frame and
are provided with arms d' extending upwards and attached to rods e e
These
rods e e are connected to eccentric pins el carried by a disc as clearly shown in
Figures 1 and 2. The disc is rigidly attached to a spindle g arranged in the
centre of the upper cross bar of the window frame, and projecting on the inside of
the door where it is provided with a knob or handle! (Figure 3).
g
The spindle and disc can be rotated by turning the handle f. whereby the
catches or pawls d d are enabled to be disengaged from the recesses / in the sash
frame so as to admit of raising or lowering the window.
By means of an arrangement illustrated in Figure 4 the apparatus is enabled to
effectually prevent the rattling of railway carriage windows for example. With
this object the ends of the pawls d are made wedge shaped or bevelled and the
surfaces of the part,c of the sash frame are made of corresponding form. so that on
fixing the window in any position the pawl d acts as a wedge between the sash and
the frame effectually preventing the rattling of the window, which is maintained
pressed against the surface of the groove in which it slides.
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 is
1. The combination of the pawls or catches d d pivoted to the sashes or shutters
and adapted to engage in notches or recesses formed in the sash frame substantially
as hereinbefore described with reference to the accompanying drawings.
2. The mechanism for operating the pawls d d consisting of the rods e e pivoted at
one end to the extensions or arms d¹ of the said pawls and connected at the other
end to eccentric pins on a revolvable disc carried by the upper part of the frame
and operated by means of a handle substantially as hereinbefore described with
reference to the accompanying drawings.
}
3. The pawl d having a wedge shaped end in combination with a recess of
corresponding form substantially as hereinbefore described with reference to
Figure 4 of the accompanying drawings.
.
4. A device for holding sliding sashes and shutters substantially as hereinbefore
described and illustrated in the accompanying drawings..
Dated this 18th day of June 1891
J. H. JOHNSON & Co.,
Agents.