Improvements in Carriage and similar Windows.
Year: 1892

page_text: Date of Application, 9th Dec., 1892-Accepted, 21st Jan., 1893
COMPLETE SPECIFICATION.
Improvements in Carriage and similar Windows.
I, HEINRICH WAHLS of Parchim in the Grand Duchy of Mecklenburg-Schwerin
in the German Empire, Builder, 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 sliding windows such as are commonly used in railway
and other carriages and its objects are to prevent rattling, to enable such windows
to be moved without exertion, and to provide means whereby they may be easily
locked in any position.
In the ordinary type at present in use where the window after being closed is
supported upon a suitable ledge, it frequently happens that the window falls down
into the lower part of the door, having been shaken from its seat by the vibration
of the carriage. This disadvantage also is overcome by the adoption of my
invention.
In a carriage or other similar window constructed as hereinafter described a
suitable counterbalancing weight is employed; the guiding grooves have a peculiar
shape given to them so that rattling is prevented even when the window is only half
raised; and suitable easily operated mechanism is employed which grips or engages
with the counterbalance cord or chain and securely holds the window in any
position.
In order that my invention may be more readily understood I have hereto
appended a sheet of drawings reference to which is made in the following
description-
Figure 1 represents an elevation of the improved window in the closed position.
Figure 2 illustrates a vertical section of Figure 1.
Figure 3 shews a section along the line A B Figure 1.
Figures 4 and 5 are respectively representations on an enlarged scale of vertical
and horizontal sections of the locking and stopping arrangements.
The window a at its lowest position is contained within a chamber or casing b in
the lower part of the door and is almost counterbalanced by the weight e which is
secured to the window by a chain & running over the pulley e.
In order to prevent rattling the guiding grooves fare formed of a varying width,
about the middle of their height being only wide enough to admit of the passage of
the window frame but widening out both above and below. As will be seen by
reference to the drawings one side of the groove at the upper end is about parallel
with the other side at the lower end, so that upon the window being closed, the
springs p fixed in the upper ends of the guide grooves force forward the top of the
window to the opposite side of the groove and at the same time owing to the window
being, as it were, pivoted at the narrow part of the grooves the bottom is carried
in the opposite direction over the raised edge of the weather or rain board Even
if the window were only half raised the contracted parts of the grooves of would hold
them sufficiently to prevent any noise.
9.
Pivoted to the inside of the door is an angle lever i which passes through a slot
in the door and terminates outside in a knob k and inside in a handle 1. This leveri
is furnished with a lateral projection h upon which the bottom of the window rests
where it is closed, and has a downward extension i¹ in connection with a horizontal
lever m pivoted at m'. The bent or returned end n of the lever m enters the links
of the counterbalance chain d, thus locking the window in any position and is held
in place by the spring o which also holds the lever i and handle close against the
door inside the carriage.
The window being closed, its lower edge rests upon the weather board g and the

page_text: projection of the lever i. If it be desired to lower it, it is only necessary to pull
the handle inside the carriage or to raise the knob k on the outside thus disengaging
the end of the lever m from the chain and raising and moving the window off the
rain board by means of the projection h. The window being slightly heavier than
its counterbalance now falls gently down into the casing band may be stopped and
secured in any position by releasing the lever i and thus allowing the spring o to
force the stop n into the chain. The window is pulled up by means of a handle and
is automatically forced on to the weather board and the projection h by the
springs p.
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. In a carriage or similar window a locking mechanism by means of which the
window may be secured in any position, constructed arranged and operated substan-
tially as hereinbefore described and as illustrated by the accompanying drawings.
2. The combination with the described locking mechanism of a carriage or similar
'window of a projection by means of which the window is lifted from the weather
board, substantially as hereinbefore described and as illustrated by the accompanying
drawings.
3. The combination with the described carriage or similar window of centrally
contracted guide grooves substantially as and for the purpose set forth, and as
illustrated by the accompanying drawings.
4. The combination with a carriage or similar window of a counterbalance,
locking and disengaging apparatus, and noise preventer, all constructed and arranged
substantially as hereinbefore described and as illustrated by the accompanying
drawings.
5. A carriage or similar window constructed and arranged and operated
substantially as hereinbefore described and as illustrated by the accompanying
drawings.
Dated this 8th day of December A.D. 1892.
WILLIAM E. HEYS,
Agent for the Applicant.