IMPROVEMENTS IN WINDOW SHUTTERS OR BLINDS
Year: 1878

page_text: LETTERS PATENT to Alexander Melville Clark, of 53, Chancery Lane, in the
County of Middlesex, Patent Agent, for the Invention of "IMPROVEMENTS IN
WINDOW SHUTTERS OR BLINDS." A communication from abroad by Asher
Bijur, of the City, County, and State of New York, United States of America..
PROVISIONAL SPECIFICATION left by the said Alexander Melville Clark at
the Office of the Commissioners of Patents on the 4th February 1878.
ALEXANDER MELVILLE CLARK, of 53, Chancery Lane, in the County of Middlesex;
Patent Agent.
" IMPROVEMENTS IN WINDOW SHUTTERS OR BLINDS." [A com-
munication from abroad by Asher Bijur, of the City, County and State of New
York, United States of America.]
This Invention has reference to such improvements in outside and inside shutters
that the slats or laths may be adjusted to any degree of inclination in easy manner
and retained in position without any slat rod that is visible from the outside.
The moving and retaining mechanism is arranged at the inside of one stile of the
shutter frame, and is thereby protected against wear and corrosion by the action of
the weather.
In place of hanging the slat rod in the common manner by staples and eyes at the
centre or other visible part of the slats, the same is arranged in connection with the
slat pins or pivots at one end of the slats or laths, the shutter stile at that side being.
recessed to receive the adjusting mechanism.
Short crank arms are keyed to the ends of the slat pivots, these crank arms being
parallel to each other, and connected by the slat rod that is pivoted to recesses of
said arms. The uppermost crank arm is extended back and provided with a weight
at the opposite end, or acted upon by a spring, or the upper and lower arms are
connected by a second pivot rod, or other equivalent means may be employed to
balance the adjusting rod and arms, and facilitate thereby the adjustment of the
slats, at same time securing the retaining of the slats in whatever position they
are set.
'

page_text: The pivots of the slats turn in the perforations of an inner frame which is attached
The slats and the
by screws to the stiles, and may be readily taken out, if desired.
adjusting mechanism is applied to this frame and attached with the same to the
shutter frame, the adjusting mechanism fitting into the recessed stile at one side of
the same.
A suitable thumb rest of one of the slats facilitates the setting of the same, though
this may also be accomplished by taking hold of any one slat.
The main advantage of this shutter construction consists in the arrangement of
the slat rod at the inside of the frame, so as to protect thereby the adjusting parts
against wearing out by the influence of the weather.
Secondly. In the facility for setting the slats, and holding them in any desired
position.
And, lastly. In the construction of the sash which dispenses with the mortising
of the stiles, but substitutes therefor a separate perforated slat carrying frame.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Alexander Melville Clark in the Great Seal Patent Office on the
1st August 1878.
ALEXANDER MELVILLE CLARK, of 53, Chancery Lane, in the County of Middlesex,
Patent Agent.
"IMPROVEMENTS IN WINDOW SHUTTERS OR BLINDS."
A com-
munication from abroad by Asher Bijur, of the City, County, and State of New
York, United States of America.
This Invention has reference to such improvements in outside and inside shutters
that the laths or slats may be adjusted to any degree of inclination in an easy
manner, and retained in position without any slat rod that is visible from the
outside.
The moving and retaining mechanism is arranged at the inside of one stile of the
shutter frame, and is thereby protected against wear and corrosion by the action of
the weather.
The Invention consists of a shutter having the slat adjusting rod arranged at the
ends of the slat pivots in an interior recess of one style of the shutter frame, the
slat rod being balanced in suitable manner, and pivoted to fixed crank arms of the
slat pivots. The slats and adjusting mechanism are arranged in a detachable frame
that is secured to the shutter frame.
In the accompanying Drawing, Figure 1 represents a front elvation of the improved
shutter, partly in section; Figure 2 is a vertical transverse section on line x-x,
Figure 1; and Figure 3, a horizontal section of the same on line y-y, Figure 1.
Similar letters of reference indicate corresponding parts.
A represents a shutter of the usual construction for outside or inside use, and B,
the laths or slats which swing by end pivots a in a perforated frame C of the
shutter frame.

page_text: In place of hanging the slat rod in the common manner by staples and
eyes at the centre or other visible part of the slats, the same is arranged in con-
nection with the slat pins or pivots at one end of the slats, the shutter stile at that
side being recessed to receive the adjusting mechanism.
To the ends of the slat pivots a, are keyed short crank arms b, which are parallel
to each other and connected by the slat rod D that is pivoted to recesses of the
arms b. The uppermost crank arm b is extended back and provided with a weight
d at the opposite end, or acted upon by a spring, or the upper and lower arms are
connected by a second pivot rod, or other equivalent means may be employed to
balance the slat rod and arms, and facilitate thereby the adjustment of the slats, and
also ensure the retention of the said slats in whatever position they may be set.
The pivots of the slats turn in the perforations of the inner frame C which is
attached by screws e to the stiles, and may be readily taken out, if desired. The
slats and adjusting mechanism are applied to frame C, and attached with the same
to the shutter frame, the adjusting mechanism fitting into the recessed stile at one
side.
A suitable thumb rest of one of the slats facilitates the setting of the same, though
this may also be accomplished by taking hold of any one slat.
The main advantage of this shutter construction consists in the arrangement of
the slat rod at the inside of the frame, so as to protect thereby the adjusting parts
against wear by the influence of the weather.
Secondly. In the facility for setting the slats and holding them in any desired
position.
And, lastly. In the construction of the sash which dispenses with the mortising
of the stiles, but substitutes therefor a separate perforated slat carrying frame.
Having described the nature of my Invention, and the manner of performing
the same, I declare that what I claim as my Invention to be protected by the
herein-before in part recited Letters Patent is,-
1st. As an improvement in shutters or blinds, the combination of the slats
with a slat rod and adjusting mechanism arranged at one end of the slats at
the inside of the shutter frame, so as to be entirely out of sight, substantially as .
described, and for the purpose specified.
2nd. The combination of a shutter frame having a recessed stile with slats
turning in a perforated supporting frame and with adjusting mechanism applied to
the pivots at one end of the slats, and fitted into the recess of the style, so as to be
enclosed thereby, substantially as described, and for the purpose specified.
3rd. The combination of a shutter frame having a recessed stile with slats, a slat
carrying frame and a balanced adjusting mechanism applied to the pivots at one
end of the slats, the adjusting and balancing mechanism being fitted into the recessed
stile, and enclosed by the same and the slat carrying frame, substantially as and for
the purpose described.
4th. The combination of slats B, mortised frame C, and balance slat rod D pivoted
to fixed and recessed crank arms of the slat pins outside. of perforated detachable
frame C, substantially as specified.
In witness whereof, I, the said Alexander Melville Clark, have hereunto set
my hand and seal, this 1st day of August, in the year of our Lord One
thousand eight hundred and seventy-eight.