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Патент USA US2025566

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2,025,566
w G. B O G A R T
ELEVATOR GATE
Filed Maron 3, 1934
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INVENToR
ATTORNEY-5
2,025,566
Patented Dec. 24, 1935
UNITED' STATES PATENTv OFFICE
2,025,566
ELEVATOR GATE
William G. Bogart, Cincinnati, Ohio, assignor to
The Warner Elevator Manufacturing Company,
Cincinnati, Ohio, a corporation of Ohio
Application March 3, 1934, Serial No. 713,899
4 Claims.
This invention relates to improvements in slid
ing gates of bar or lattice type, preferably con
stituting a plurality of rigid bars arranged per
pendicular to the direction line of sliding travel
(Cl. 20-20)
consists of a sheet metal base strip 2 longitudinal
ly corrugated providing a central recess or chan
nel and opposingly inclined longitudinal edge
ñanges 3, 3, and a face strip 4 of sheet metal,
5 connected in a non-articulated manner to> avoid
longitudinally corrugated or of V-iorm in cross
any buckling or side bulging when the gate travels
in a straight course, yet sufficiently flexible for
crimped over the edge flanges 3 of the base strip
rounding or traversing a sharp curve in the
unitarily connecting said strips. This structure
course.
provides a very rigid and extremely light weight
An object of the invention is to provide a gate
of bars or strips arranged in lattice design in
which the laterals constitute flexible metal strips.
Another object of the invention is to provide
a lattice type sliding gate of yielding structure
i5 to traverse sharp curves.
Various other features and advantages of the
invention will be more fully set forth in the de
bar as well as ornate. The bars, of a given num- 10
ber for making a deñnite width of gate, are ar
ranged in spaced parallelism and secured to
gether by a plurality of flexible metal cross strips
5, preferably of uniform spacing apart and riveted
or permanently attached to each vertical bar. 15
As shown in Figure 5 for the bar of sheet 'metal
hollow construction the cross strips 5 are riveted
scription of the accompanying drawing, in which:
to the base strip 2 of the bar, thereby concealing
Figure 1 is a front elevation of the improved
20 lattice type sliding gate shown as a closure for
the heads of the fasteners from the outer or face
an elevator cab.
Figure 2 is a top plan view of the same.
Figure 3 is an enlarged fragmentary section
on line 3_3, Figure l, detailing the hanger and
25 guide devices.
Figure 4 is a plan view, inner side, of a section
of the gate, showing an operating handle applied
thereon and a flexible cross strip for connecting
the spaced vertical bars.
30
Figure 5 is a horizontal section through a sec
tion of the gate rounding a curve or corner.
side of the gate.
_
a track or rail l.
The hanger provides a down
wardly extended shank engaged into the upper
open end of the hollow bar and riveted or fixed 25
to the inner side of the base strip thereof.
The rail or track as shown in the present in
stance, is mounted to the top of the cab 8 and
extends from across the full width of the door
opening or front of the cab around at right 30
angles along one side of the cab. The two rela
tively right angular sections of the continuous
for private residence elevator lcabs having a very
limited floor area. These types of elevators are
designed for installation in already built resi
40 dences, generally for a one floor rise service,
traversed.
wherein only a small space for an elevator is
available. For such use it is‘desirable to have a
very secure gate, of reduced weight, freely and
easily operated and of lattice type, with no bind
45 ing of the parts one against the other interfering
to the opening or closing movements.
Referring to the drawing, I indicates a plu
rality of vertical bars, preferably of uniform
length, which may be either of solid, tubular
50 or sectional structure, several different construc
tions of bars being herewith illustrated. One
form, as illustrated in Figures 3 to 5 inclusive,
the bars each are composed of sheet metal ap
propriately fabricated for lightness and stability
55 and of hollow or tubular cross section. Each bar
20
Each vertical bar l of the series is independently
suspended from a roller hanger 6 engaged upon
Figure 6 is a horizontal section through section
of gate illustrating a. modiñed form of bar.
The gate is primarily contemplated as a sliding
35 closure for elevator cabs requiring a full cab
width door opening, and is particularly adaptable
5
section, with its opposite longitudinal edges
rail or track join in a rounded or curved juncture
of comparatively short radius which will track the
hanger rollers without binding or jumping the 35
rail for any speed at which the gate may be
The gate is also guided or tracked at its lower
end, as is customary in sliding gates, and for this
purpose a grooved or channeled track or guide way 40
9 is provided, having a course corresponding to
that of the top rail or track 1. Each vertical
gate bar I of the series preferably is individually
guided at its lower end to secure the same against
lateral displacement, having a sliding connection 45
with the base rail 9. Therefore, the lower end
of each vertical bar l has a rigid metal shank eX
tension lü secured to the bar in substantially the
same manner as the shank of the hanger at the
top end of the bar, and engaged into the channel
of the base guide way 9. '
.
The ñexible metal straps 5 yieldingly connect
the vertical bars and readily bend to any‘radius
of a track curve, thereby enabling the production
of a resilient lattice type of gate with the bars 55
2,025,566
in spaced connection under sufficient stability to
comprising a plurality of rigid bars arranged-in
allow a considerable Width of gate to be con
veyed by imparting a traversing pressure to an
spaced parallelism and one or more iiexible strip
end or leading bar of the series Without causing
any buckling or interference to the free travel of
ing the bars in their spaced parallelism and pro- '
viding a flexible coupling therefor to accommo
date. for gate travel in a curved path of the rail
on Which the gate rides.
the gate or any of its individual bars.
As shown in Figure 4, a handle Il, extending
from a base plate I2 ñxed to two leading bars
of the gate is provided on the inner side of the
gate.
In the modiñed form shown in Fig. 6, the verti
cal bars I are either solid and slotted to engage a
cross strap 5 therethrough and ñxed by a screw
or rivet I3, or the bars, each may constitute a pair
15 of solid strips of duplicate cross sectional con
metal straps ñxed to each of said rigid bars hold
3. A sliding gate of the character disclosed,
comprising a plurality of rigid bars arranged in
spaced parallelism and a plurality of flexible strip 10
metal straps ñxed to each -of said rigid bars hold
ing the bars in their spaced parallelism and pro
tour, one or both notched in the inner side or
viding a ilexible coupling therefor to accommo
date for gate travel in a curved path of the rail
cn which the gate rides, said rigid bars formed
of longitudinally corrugated sheet metal strips
joining faces to receive the iiexible cross straps,
crimped together at longitudinally meeting edges.
and the parts suitably secured together.
Having described my invention, I claim:
1. A sliding gate of the character disclosed,
20
comprising a plurality of rigid bars arranged in
spaced parallelism perpendicular to the line of
gate travel and a plurality of flexible strip metal
cross straps fixed to each of said rigid bars hold
25 ing the bars in their spaced parallelism and pro
viding a flexible coupling therefor to accommo
date for gate travel in a curved path of the rail on
which the gate rides.
2. A sliding gate of the character disclosed,
4. A sliding closure for a door opening, com
prising a plurality of rigid bars joined together in
parallelism by ñexible strip metal cross straps, 20
each bar rigidly attached to the cross straps hold
ing the bars in their spaced parallelism and pro
viding a flexible coupling therefor to accommo
date for gate travel in a curved path of the rail
on which the gate rides, and a hanger respectively 25
ñxed to the upper end of each rigid bar for riding
a stationary guide rail and suspendingly support
ing the bars individually.
WILLIAM G. BOGART.
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