The Sauk Centre herald. (Sauk Centre, Stearns County, Minn.) 1886-current, 1914-08-27

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 q inch thick
ness, or their equivalent, or with steel
or galvanized iron of not less than No
equivalent shall be cur and ARRANGED
SO that vertical joints between boards
shall always come over an angle or tee
iron to which it shall be securely fast
ened by means of proper bolts or nut s.
spaced not more than six inches apart
The sheet metal shall be so cut and ar
ranged that joints shall always come
over a member, be overlapped and bolt
ed or r1Veted to such member; bolts OF
r1vets to be spaced not over three inch
es apart on centers
The Hoor shall be made in two parts
an upper floor and a lower floor Low
er floor may be made or 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. tnree-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 by the oper-
ator and one for operation of the ma
chine. Opening for the machine shall
be not more than ten inches high and
eighteen inches long; opening for oper-
ator shall be not more than eight
inches high and eight inches long.
The two openings for each machine
shall be provided with gravity doors
const ructed of metal not less than
three sixteenth-in 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 fasten ed
to a fusible link which melts at a tenn
perature of 160 degrees Farenheit, the
whole so arranged that the door may
be easily released and closed by hand
The main or entrance door shall be
hung on at least three heavy hinges
and arranged SO as to close against a
be provided with substantial spring
which will keep it closed tightly.
All shelves, furniture and fixtures
within the booth shall be constructed OF
incombustible material.
Booths shall be provided with ven
tilating inlet in each of three sides
said inlets to be fifteen inches long and
three inches high. the lower side, OF
same to be not more tnan three inches
above floor level. Said inlets shall be
covered on the outside by wire net
ting of not greater mesh than rs inch
to be firmly secured to the asbestos
boards or metal by means of iron strips
and screws or riVetS.
An additional means of ventilation
shall be provided by an opening near
the centre OF the top the DOOCn, the
upper side of which opening shall be
provided with an iron fange, which
fiange 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 the
building or to a special incombustible
vent f1ue; all parts of the vent pipe
shall be at least six 1ncnes from any
combustible material. No such room,
compartment or booth, or enclosure
shall have any other openings therein
than such as are here provided.
(b) BRICK, TILE OR CONCRETE
BOOTHS-If the room, compartment,
booth or Enclosure is constructed of
brick, tile or concrete, it shall have
walls not less than four inches in
thickness, except that if the same be
constructed of REINFORCED concrete,
the thickness need be only two inches.
of booth and protection of the openings
shall conform with the requirements
of Sub section (a) preceding:
Co PORTABLE BOOTHS-Portable
booths shall not be used In any thea.e1
or public hall in which a permanent
booth has been or is installed, but shall
be used only for the temporary one
night exhibition of motion pictures in
places of assemblage, such as halls be-
longing to commercial organizations,
churches, etc., where IT is not practical
to install permanent booths made in
accordance with the above specifica-
the specifications for q permanent
booth shall be followed. with the ex-
ceptions hereinafter set forth, viz: la
intermediate uprights may be spaced
ventilation need not be provided ex-
cept that there shall be an opening for
ventilation in the top of the BOOTH
which opening shall be ten inches in
eighteen inches in height provided with
ventilating cap, shall be attached
thereto. (c) The booth may be made in
a folding type so constructed that when
assembled it will be rigid and all
joints tight so that flames may not pass
through them. (d) The base of the
booth shall have a mango extension
outward on all four sides provided wit h
a sufficient number of holes, through
which the booth shall De securely fas-
tened to the floor.
Section 6. The motion picture ma
chine shall be securely Fastened to the
floor to prevent accidental overturning
of same. 1t shall be equipped with a
feed reel enclosed in metal magazine
constructed Of No. 20 U. S. guage metal
with slot at the bottom only large
cover SO arranged that this slot can be
instantly closed. No solder shall be
used In the construction of this box.
Door on side shall be Of metal and pro-
which will keep the door closed tight
ly. Said machine SHAH be equipped
with automatic shutters. A 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-
structed and Installed as follows:
(a) Must be substantially con-
and entirely OF metal except
where the use of approved insulating
material is necessary.
(b) 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.
lc) 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.
I'D Lamp must be controlled by a
double pole switch w1rnIn easy reach
of operator.
(e) Conductors Supplying current to
lamp must not be smaller than No. 6 B..
& S. gage or its equIva-en.. Stranded
conductors, provided with approved
Jugs, must be used between lamp and
permanent wiring. A fireproof insula-
ton must be used on conductors in
side lamp and those connected to the
arc lamp and resistance. Conductors
passing through case Of lamp must be
properly protected with porcelain BUSH
ings.
(f) Resista nce box must be kept not
less than one ID foot from any COM
bustible material, or must be separated
from it by a slab of slate or marble.
The resistance box must be surrounded
with substantially attached metal
guard having mesh not larger than
one-half inch, which guard is to he
4 Of ct foi6 Ia