AN IMPROVED METHOD OF SECURING WOODEN LATHS TO METAL BANDS IN THE MANUFACTURE OF REVOLVING OR ROLLING SHUTTERS, AND FOR OTHER LIKE PURPOSES
Year: 1876

page_text: LETTERS PATENT to Caleb Charles Sherry, of 159, Fenchurch Street, in the
City of London, for the Invention of "AN IMPROVED METHOD OF SECURING
WOODEN LATHS TO METAL BANDS IN THE MANUFACTURE OF REVOLVING OR
ROLLING SHUTTERS, AND FOR OTHER LIKE PURPOSES." A. communication from
abroad by James Godfrey Wilson, of the City and State of New York, United
States of America,
Sealed the 12th May 1876, and dated the 29th February 1876.
PROVISIONAL SPECIFICATION left by the said Caleb Charles Sherry at
the Office of the Commissioners of Patents on the 29th February 1876.
CALEB CHARLES SHERRY, of 159, Fenchurch Street, in the City of London.
"AN
IMPROVED METHOD OF SECURING WOODEN LATHS TO METAL BANDS IN THE
MANUFACTURE OF REVOLVING OR ROLLING SHUTTERS, AND FOR OTHER LIKE
PURPOSES." A communication.
This Invention relates to revolving or rolling shutters and the like, and is
designed to afford the means for securing the slats or laths of the same to each
other edge to edge by means of bands of steel or other suitable material passing
transversely in mortises through the slats, and having a series of barbs or teeth
either punched or cut in them, and forming part of said bands, or inserted and held
in slots cut at equal distances apart in the bands. In a shutter which has in it two
or more metal bands they are inserted in the mortises of the laths which are drawn
down the bands and over the teeth, whose points extend opposite to the direction
of insertion and form a succession of inclined planes which allow the mortised lath
to move readily over them; when however the laths are drawn into their proper
places the projecting points of the teeth prevent any motion of the bands in an
opposite direction, because they will engage in the sides of the mortises in that
direction, and consequently the slats or laths are held securely to each other and to
the metal bands which support them.
In some instances it is preferable to draw the laths over the bands into position
from both ends of said bands, and to so place the teeth that their points are facing
each other in the middle of the band, as herein-after described.
The slats of the shutter are mortised transversely from edge to edge, there being
as many mortises as there are bands to be employed. The bands are preferably
made of steel or other metal possessing a good degree of elasticity and strength.

page_text: The teeth may be produced by cutting and punching, and forcing out on one or
both sides a series of angular teeth from the body of the band at suitable intervals,
according to the width of the slats, so that there will be one or more teeth for each
slat; or the teeth may be separate pieces of metal and fixed to them, as herein-
after described. The teeth in these bands can be punched before the laths are
drawn on them, and in this case all the teeth on each band may point in the same
direction, and may be placed the reverse way on the band occupying other mortises
in the shutter; or each tooth may be punched as required at the time of its
insertion into the mortise. The laths being drawn over them from both ends of
the bands the teeth will point towards each other in the middle of the shutter. Or
the teeth may be loose pieces of tempered steel or other suitable material bent to an
angle and inserted in the slots, as required, in the process of putting the shutter
together.
In some instances the laths or slats are fixed at a certain distance apart, and the
mortises in the slats are made wider for a distance of about half their depth.
Loose teeth are provided which may be straight or notched, and having wide tops
which catch and stop against a ridge in the mortises formed by the junction of the
wide and narrow mortises and the points of said teeth. These loose teeth engage
in the sides of the wide mortises and hold the lath securely to the metal bands so
that it cannot be drawn in either direction. Or the laths may be secured to the
metal bands by a piece of metal having two sharp curved teeth at one end and a
lip at the other end. The mortises in the laths are wider for a short space in the
under sides, forming a ridge, so that when the shutter or other object is being put
together the metal catch is inserted in the slots which are punched at regular
distances in the bands, and the laths being drawn over them the teeth or barbs
engage in the inner surfaces of the mortises, while the lips catching against the said
ridges the lath is held firmly in place. The slots in the metal bands being punched
at equal distances apart the spaces between the slats are automatically regulated.
The metal bands which pass through the laths can be placed at any given
distances apart, and any number may be used in one shutter or other object,
providing always that the spaces between the slots which receive the barbs or teeth
are the same in all bands intended for the same shutters. I place a cushion of
rubber, leather, or other suitable material between the edges of the wood slats or
laths at their junction with the metal bands, so that the metal bands can pass
through the cushions and hold them in place.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Caleb Charles Sherry in the Great Seal Patent Office on the 28th August
1876.
CALEB CHARLES SHERRY, of 159, Fenchurch Street, in the City of London.
"AN IMPROVED METHOD OF SECURING WOODEN LATHIS TO METAL BANDS IN THE
MANUFACTURE OF REVOLVING OR ROLLING SHUTTERS, AND FOR OTHER LIKE
PURPOSES." A communication from abroad by James Godfrey Wilson, of the City
and State of New York, United States of America.
This Invention relates to revolving or rolling shutters and other articles of
similar construction, and is designed to afford the means for securing the slats or
laths of the same to each other by bands of steel or other suitable material.
In constructing a shutter according to my Invention the bands are passed
transversely through mortises in the slats, and have a series of barbs or teeth
punched or cut in them, or inserted and held in slots cut at equal distances apart in
the bands. In a shutter which has in it two or more metal bands the said bands
are inserted in the mortises of the laths which are drawn down the bands and over
the teeth, whose points extend opposite to the direction of insertion and form a

page_text: succession of inclined planes which allow the mortised lath to move readily over
them; but when the laths are drawn into their proper places the projecting points
of the teeth prevent any movement of the bands in an opposite direction because
they will engage in the sides of the mortises in that direction, and consequently the
slats or laths are held securely to each other and to the metal bands which support
them. A distance piece formed of wood, cast iron, brass, or other suitable material
may be inserted in each of the spaces between the laths.
In some instances it is preferable to draw the laths over the bands into their
position from both ends of said bands, and to so place the teeth that their points
face each other in the middle of the band, as will be herein-after described.
This Invention is illustrated in the accompanying Drawings, in which,
Figure 1 is an elevation of a portion of a shutter made according to the said
Invention; Figure 2 is a vertical section thereof on the line x, x, Figure 1.
The remaining Figures are herein-after described.
Similar letters indicate corresponding parts throughout the Drawings.
The slats a of the shutter have mortises cut transversely through them from
edge to edge, as shewn at b, there being as many lines of mortises as there are
bands employed. The bands c are preferably made of steel or other metal
possessing sufficient elasticity and strength. The teeth c¹ may be produced, as in
Figures 1 and 2, by cutting or punching, and forcing out on one or both sides a
series of angular pieces from the body of the band at suitable intervals, according to
the width of the slats, so that there will be a tooth or two or more teeth for each
slat; or the teeth may be separate pieces of metal fixed to the band, as herein-after
described. The teeth in these bands may be punched before the laths are drawn on
them, and in this case all the teeth on each band may point in the same direction,
and may be placed the reverse way on the band occupying another line of mortises
in the shutter; or cach tooth may be punched as required at the time of its
insertion into the mortise. The laths being drawn, over them from both ends of the
bands the teeth will point towards each other in the middle of the shutter, as
shown. The teeth may be formed at the edges instead of at the centre of the band
if desired.
In the shutter illustrated in the elevation and section, Figures 3 and 4, the
teeth are loose pieces of tempered steel or other suitable material bent to an
angle and inserted in the slots d, as required, in the process of putting the parts of
the shutter together. Figure 5 is an elevation; and Figure 6, a section of a portion
of a shutter, the laths or slats of which are fixed at a certain distance apart. The
mortises in the slats a have one portion wider than the other portion for a
distance of about half their depth, thereby forming shoulders in the mortises. The
loose teeth c³ may be straight, as in Figure 6, or notched, as at c², Figure 3. At
the top they are of sufficient width to form stops or bearings for the shoulders c¹ in
the mortises, and the points of the said 'teeth engage in the sides of the wide
portion of the mortises, and hold the lath securely to the metal bands so that it
cannot be drawn in either direction.
Figures 7 and 8 are similar views representing portions of a shutter whose laths
are secured to the metal bands by a piece of metal c which has two sharp curved
teeth cat one end, and a lip c' at the other end. The lower portions of the
mortises in the laths are made wider than the upper portions thereof, forming a
ridge or shoulder f, as shewn in Figure 8, and in the construction of the shutter
the metal catch c is inserted in the slots g which are punched at uniform distances
apart in the bands, and the laths being drawn over them the teeth or barbs engage
in the inner surfaces of the mortises, and the lips c7 catch against the ridges f, the
laths being thereby held firmly in place. The slots in the metal bands being
punched at equal distances apart, the spaces between the slats are accurately
regulated. The metal bands which pass through the laths can be placed at any
given distances apart, and any number may be used in one shutter, provided always
that the spaces between the slots which receive the barbs or teeth are the same in
all bands intended for the same shutter.

page_text: Figures 9 and 10 are similar views of part of a shutter showing distance pieces h
of wood, cast iron, or other suitable material placed between the laths.
Figure 11 shews cushions of india-rubber, leather, or other like material placed
between the laths or slats.
In Figure 12 I have shewn an improved transverse sectional form of the laths a,
which is designed to prevent the beating in of rain between the laths or through
the joints of the shutter. This object is accomplished by forming the said laths
with lips al and cavities a² which are fitted together, as shewn, and attached to the
bands, as above described.
I apply the aforesaid metal bands to corrugated metal shutters, the said bands
being fastened in any convenient manner. These bands prevent the stretching or
pulling out of the corrugations, and when the said bands are placed on the outer
edges of the shutter prevent the destructive wearing of the same. These bands
also prevent the catching of the corrugations against each other when the shutter is
being operated, and causes it to run with very little noise.
In some instances I provide a relieving roller for a revolving shutter arranged as
shown in Figure 13, which is an end view of this roller and adjacent parts. The
roller is made of india-rubber, metal, or other suitable material, its outer surface
being shaped like an ordinary cog wheel and made to fit accurately the corrugations
in the shutter j, so that two or more of these wheels or rollers being placed in the
line of the shutters and fixed as ordinary relieving rollers will act as a rack and
pinions and cause the shutter to keep perfectly level, and the surface of the wheel
or roller being always in contact with the shutter all jarring is obviated, and the
shutter is worked more easily and with less noise than would otherwise be
practicable.
Having thus fully described the said Invention, as communicated to me by my
foreign correspondent, and the manner of performing the same, I wish it understood
that I claim in the construction of revolving or rolling shutters and the like,—
First. The metal bands with barbs or teeth either cut, punched, or stamped, and
forming part of the said bands or inserted in slots prepared for their reception or
otherwise attached to the bands, as above set forth, and for the purpose specified.
Second. The ridges or shoulders in the mortises of the laths, and the arrange-
ment of the barbs or teeth in connection with the said mortises and the metal
bands, as above set forth, and for the purpose specified.
Third. The peculiar construction of the laths or slats, as illustrated in Figure 12
of the Drawing, and their arrangement together upon the bands, as above described,
for the purpose specified.
Fourth. The modification of my Invention consisting in the application of india-
rubber or other cushions between lathis or slats secured upon metal bands, as above
set forth.
In witness whereof, I, the said Caleb Charles Sherry, have hereunto set my
hand and seal, this Twenty-second day of August, in the year of our Lord
One thousand eight hundred and seventy-six.
CALEB CHARLES SHERRY. (L.S.)