The Sauk Centre herald. (Sauk Centre, Stearns County, Minn.) 1886-current, 1914-05-14

four corner uprights; intermediate up
rights on sides and intermediate mem
berS on roof, spaced at least every two
feet Doorway to be two feet wide and
at least five feet high, with angle iron
framing. All joints in frame to
be made with three s1xteenths inch
steel plates, to which eGcn angle iron
or tee iron shall be riv1ted or bolted
by the use of at least two n inch bolts
or rivets. All bolts and rivets shall
have fiat heads, said heads to be placed
counterSunk.
The sides and top of booth and main
or entrance door shall be covered with
hard asbestos boards or asbestos build
ing lumber of at least "a inch thick
ness, or their equivalent, or with steel
or galvanized iron Of not less than NO.
20 U. S. gauge; The asbestos or it's
equivalent shall be Gu. and arranged
so that vertical joints between boards
shall always come over sn angle or tee
iron to which it shall be securely fast
spaced not more than six inches apart.
The sheet metal shall be so cut and ar
ranged that joints shall always come
over member, be overlapped and bolt
ed or riveted to such member; bolts or
rivets to be spaced not over three inch
es apart on centers.
The floor shall be made in two parts,
an upper floor and a lower floor. Low
err floor may be made OF wood, seven
eighths-inch minimum thickness, sup
ported on lower leg of horizontal angle
irons. Resting on the floor shall be a
floor made of hard asbestos board, as
bestos building lumber, three eighths-
inch minimum thickness, or an equally
good non combustible equivalent.
There shall be not more than two
openings in the booth FOR each ma
chine, one for observation ny the oper-
ator and one for operation of the ma
chine. Opening for machine shall not
be more than six inches high and
twelve inches long. Opening for opera
tor shall not be more tnan four inches
wide nor more than twelve inches high
The two openings for each machine
shall be provided with gravity doors
constructed Of metal not less than
three sixteenth Inch in thickness; when
closed they shall overlap the openings
at least two inches on the sides, and
be arranged to slide in properly con-
structed metal groves without binding;
said doors to be held open normally by
use OF fine combustible cord fastened
TO Iuslble link which melts at a tenn
perature OF 100 degrees Farenheit, the
whole so arranged that the door may
be easily released and closed by hand.
Inc main or entrance door shall be
hung on at least three heavy hinges
and arranged so as to close against a
substantial rabbit. The door shall also
pc provided with a substantial spring
winch viii keep it closed tightly.
All shelves, furniture and fixtures
within the booth shall be constructed of
incombustable material
Booths shall be provided with a ven
Iliatlng inlet in each of three sides,
three inches high, the lower side of
same to be not more tnan three inches
above floor level. Said inlets shall be
t6veree on the outside by a wire net
tlng OF not greater mesh than k inch
to be firmly secured to the asbestos
boards or metal by means Of iron strjns
and screws or rivets.
An additional means of ventilation
may be provided by an opening near
the centre of the top of the booth. the
upper side of which opening shall bx
PROVIDED with an iron fiange, which
mango is to be securely fastened to the
tee irons supporting the roof. Securely
fastened to this pipe snail be a metallic
vent pipe leading to the outside of tie
building or to a special incombustible
vent Hue; all parts of the vent pipe
shaii be at least six 1ncnes from any
combustable material. No such room.
compartment or booth, or enclosure
shall have any other openings therein.
than such as are here provided
81 BRICK, TILE OR CONCRETE
BOOTHS-If the room, compartment
pooth or Enclosure is constructed Of
nriek' tile or concrete, 1t shall have
walls not less in thickness than eight
lnches. except that II reinforced con-
crete is used the thickness need be oniy
four inches. The ventilation, general
arrangement ARA as me of the booth. and protec
tion or the openings shall conform with
the requirements of subsection (a) pre-
ceedinG.
!, Co PORTABLE BOOTHS-Portable
ooothS snail not be used in any thea.er
booth has been or is installed, but shall
be used only for the temporary one
night exhibition Of motion pict ures in
piaces OF assemblage, such as halls be-
longing TO commercial organizations
churches, etc., where IL is not practical
to install permanent booths made in
accordance with the above specilica-
tions. In constructing a portable booth
SOGcl1CatlOnS
booth shall be followed, with the ex-
ceptlons hereinafter set forth, viz: ta)
intermediate uprights may be spaced
every four feet. (b) Spec.ar means for
ventilation need not be provided ax-
cept that there shall be Gil opening for
ventilation in the top of the booth,
which opening shall be ten inches in
diameter and metaI sleeve at least
eighteen inches in height provided with
a Ventilating cap, shall be attached
thereto. lc) The booth may be made in
assembled it will be rigid and all
joints tight SO that flames may not pass
through them. CD The base of the
booth shall have a mango extension
SUFFICIENT number of holes, through
which the booth shall De securely fas-
tened to the floor.
Section 6. The motion picture ma
chlne shall be securely Fastened to the
floor to prevent accidental overturning
OF same: 1t shall be equipped with
feed reel enclosed in a metal magazine
constructed of No. 20 U. S. guage metal
with slot at the bottom only large
enough for film to pass out, and with
cover so arranged that this slot can he
instantly closed. No solder shall be
used in the construction of this box
Door on side shall be Of metal and pro-
vlded with spring hinges and latch,
which will keep the door closed tight
ly. Said machine snaI1 be equipped
with automatic shutters. shutter
shall be placed in front of the condens-
or so arranged as to automatically
close when film is stationery
Section Z. The Arc Lamp used in a
motion picture machine must be con-
and installed as follows:
(a) Must be substantially con-
structed and entirely of metal except
where the use of approved insulating
material is necessary.
CD Must be so designed as to provide
for proper ventilation and to prevent
sparks being emitted from lamp when
same is in operation, and mica must lie
used for frame insulation.
(c) Self closing doors must be pro-
vided on side and rear or lamp enclos-
ure, and observation ports not larger
than two inches square may be pro-
vided. when closed with grass.
(d) Lamp must be controlled by
double pole switch within easy reach
of operator.
(e) Conductors supplying current to
lamp must not be smaller than No. B.
& S. gage or it's equYva.en,. Stranded
provided with approved
Tugs. must be used between lamp and