Improvements in and relating to Corrugated Metal Shutters.
Year: 1893

page_text: Date of Application, 11th Feb., 1893
Complete Specification Left, 1st June, 1893-Accepted, 29th July, 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Corrugated Metal Shutters.
I, ANTONIO BRUNAT JUVÉ, of No. 17 Easós Street 3rd Stage San Sebastian,
in the Kingdom of Spain, Machinist, do hereby declare the nature of this invention
to be as follows:-
My invention relates to corrugated steel shutters commonly used for the doors of
shops, warehouses and similar places and to fastening devices for securing the said
shutter in the closed position.
My invention is simple in construction and obviates the disadvantages attending
the use of ordinary shutters as hereinafter mentioned.
In the common or ordinary corrugated shutters the movements for effecting the
opening and closing of the same takes place too slowly because, although the said
shutters are provided with a winding up arrangement similar to that which I
employ, the shutter slides between channels or spaces formed between long wooden
strips conveniently supported on a double iron frame serving as a vertical door
frame similar to that used in my invention. The said shutter cannot therefore be
moved up as quickly as desirable, owing to the great and constant friction, more-
over this sliding causes a greater noise which it is desirable to avoid.
These disadvantages are obviated by the use of my invention as hereinafter
described.
According to my invention the said wooden strips are replaced by small wooden
rollers made of box or other suitable hard wood which work in channel-shaped
guides forming the door or window frame. The axes of these small rollers are
connected with the corrugated steel plate by means of bolts placed in the concave
side thereof the said axes being riveted over at its extremity beyond the small
rollers in order that the said rollers may be always kept in a convenient position
and at the same time be free to turu and roll upon one side of the channel which
forms the door or window frame.
The small rollers are arranged at about a distance of ten corrugations apart or
at other convenient distance and in order that the movement of the shutter be
uniform care must be taken that the top and bottom rollers be arranged in the first
concave parts of the top and bottom of the door.
The winding up arrangement consists of a series of pulleys arranged on a fixed
axis which is supported at its end in the wall of the building. The said pulleys are
adapted to turn by means of spiral springs connected both to axis and to the said
pulleys and the power developed, as has been found by experience, amply suffices
for the lifting of the door when the leather straps which are suitably fixed to the
top of the shutter and connected with the pulleys are wound around the latter.
When the shutter is closed the spiral springs are put under tension so that when
the said shutter is opened the energy stored up in the spring is utilized to assist in
raising the shutter which is thus effected more easily.
As the spiral springs possess more strength than is required for raising the
shutter it naturally follows that the upward movement of the said shutter is much
quicker, taking into account the use of the small rollers above described, and I
thus obtain the advantage of greater facility in the opening and closing of the
improved shutter while avoiding the great noise made by ordinary shutters by the
use of the wooden rollers sliding in the channel shaped guide.
The improved shutter is provided at both vertical sides with a steel plate of
about two and a half centimetres arranged in the convex undulations in order to
prevent the door plate warping. An horizontal stiffening plate is also arranged at
about the middle of the shutter and is fixed by means of rivets.

page_text: The fastening device consists of two bolts actuated by springs, the ends of which
bolts bear against the channel shaped guides in the open position of the shutter,
the said bolts being however forced into holes in the closed position of the
shutter so as to firmly hold the shutter in that position. The shutter is thus
locked without the use of a key which is only employed for opening the same.
In order to avoid taking out the bolts whenever the lock is out of order. they
are fixed to those which the lock contains by means of another bolt or iron bar.
I wish it understood that I do not confine myself to the exact details herein
set forth as I may modify the same without departing from the nature of the
invention.
Dated this 11th day of February 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and relating to Corrugated Metal Shutters.
I, ANTONIO BRUNAT JUVÉ, San Sebastian, Easós Street, No. 17, 3rd Stage, in
the Kingdom of Spain, Machinist, 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 corrugated steel shutters commonly used for the doors or
windows of shops, warehouses and similar places and to fastening devices for
securing the said shutters in their closed position.
My invention is simple in construction, and obviates the disadvantages attending
the use of ordinary shutters as hereinafter mentioned.
In the common or ordinary corrugated shutters the movements for effecting the
opening and closing of the same takes place too slowly, because, although the said.
shutters are provided with a lifting arrangement similar to that which I employ
the shutter slides between channels or spaces formed between long wooden strips
conveniently supported on a double iron frame serving as a vertical door frame
similar to that used in my invention.
The said shutter cannot therefore be moved up as quickly as desirable owing to
the great and constant friction, moreover this sliding causes a great noise which it
is desirable to avoid.
These disadvantages are obviated by the use of my invention, as hereinafter
described.
In the accompanying drawings I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1 is a front elevation of a shutter constructed according to my invention
showing the same in the position it occupies when pulled down or closed.
Figure 2 is a vertical section of the same drawn to an enlarged scale.
.
Figure 3 is a section of a spring drum hereinafter described and drawn to a larger
scale.
Figure 4 is a side elevation of the same.
Figure 5 is a front elevation partly in section of a portion of the shutter drawn
to an enlarged scale, showing the method of guiding the edges of the shutter.
Figure 6 is a section on the line - of Figure 5.
Figure 7 is a horizontal section on the line
the shutter with the guide and roller.
of Figure 5 showing portion of
Figure 8 is a view of the lock with the front plate removed to show the internal
mechanism, and
Figure 9 is a plan of the same, the casing being shown in section.
a is the corrugated shutter which may be of steel, iron or other suitable material,
b, bare the vertical guides for the same, c indicate the spring drums around which

page_text: the shutters are wound and which are mounted on a shaft d secured at its ends in
the wall of the building.
According to my invention the wooden strips as employed in the shutters at
present in use are replaced by small wooden rollers a' made of box or other suitable
hard wood which work in the channel-shaped guides forming the door or window,
frame. The said small rollers a' run upon axes a formed on small brackets a³ each
of which is provided with a convex side to fit into one of the corrugations of the
plate a and are secured thereto by means of rivets or the like. The rollers are
preferably provided with bushes at as shown in Figures 5 and 7.
The small rollers are arranged at about a distance of five corrugations apart or
at any other convenient distance and in order that the movement of the shutter be
uniform care must be taken that the top and bottom rollers be arranged in the first
concave parts of the top and bottom of the shutter.
The lifting arrangement consists of a series of pulleys c, arranged on the fixed
shaft d, which is supported at its end in the wall of the building. The said pulleys
are each provided with a spiral spring c¹ one end of which is secured to the inner
circumference of the said pulley and the other end thereof to the said fixed shaft d.
The power developed, as has been found by experience, amply suffices for the lifting
of the shutter the leather straps which are suitably fixed to the top of the same
and connected with the pulleys are wound together with the shutter around the
latter during the said lifting. When the shutter is closed or drawn down, the
spiral springs are put under tension so that when the said shutter is opened or lifted
the energy stored up in the springs assist in raising the shutter which is thus
effected more easily. As the spiral springs possess more strength than is necessary
for raising the said shutter it naturally follows that the upward movement of the
said shutter is much quicker taking into account the use of the small rollers above
described, and I thus obtain the advantage of greater facility in the opening and
closing of the improved shutter while avoiding the great noise made by the ordinary
shutters.
The improved shutter is provided at both vertical edges with a steel plate or
stripe of about two and a half centimetres wide which fit into slits formed in the
edges of the corrugations in order to prevent the shutter from warping, as shown
in Figure 6. An horizontal stiffening plate a is secured to the shutter a at about
the middle thereof and at the lower edge the said shutter is provided with a
projecting piece a for facilitating the raising or lifting of the same.
The fastening device for my improved shutter, is shown in Figures 8 and 9 and
consists of a casing containing the mechanism for actuating the two bolts
99 the
ends g' of which bear against the channel-shaped guide in the open position of
the shutter, the said bolts being however forced into holes in the said guides when
in the closed position so as to firmly hold the shutter in that position. The shutter
is thus automatically locked without the use of a key which is only employed for
opening or drawing back the said bolts.
The mechanism of the said lock or fastening device comprises a sliding bar h
having slots h¹ into which fixed pins or studs f¹ secured to the case fare adapted to
engage and act as guides for the said bar h. To one of the fixed pins or studs f
is pivoted a lever i having at one end a slot into which engages a pin h² secured
to the bar h, the other end of the said lever being provided with a pin or stud
which engages in the slotted end of one of the bars g. The opposite bar y is pro-
vided with a hole into which engages a pin h³ on the bar h. A spring; bears upon
one end of the bar h and another spring j¹ bears upon a projection formed at the
opposite end of the said bar, so that when the key is turned to the right to engage
with the said bar, as shown in dotted lines in Figure 8, the bars 9 will each be
moved toward the centre of the shutter and will thus withdraw the ends g' from
engagement with the holes in the channel-shaped guides to enable the shutter to
be opened.
I wish it understood that I do not confine myself to the exact details herein set

page_text: forth as I may modify the same without departing from the nature of the
invention.
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 corrugated metal shutter the herein-described means for enabling an
easier and quicker lifting and lowering of the same, which consists in providing the
said shutter with wooden rollers working in vertical channel-shaped guides and
spring pulleys for assisting in raising the said shutters, substantially as hereinbefore
described, with reference to the accompanying drawings.
2. In a corrugated metal shutter a device for automatically forcing the bolts into
the openings in the channel-shaped guides to lock the said shutter in its closed
position substantially as hereinbefore described, with reference to the drawing.
Dated this 20th day of May 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.