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Oct. 8, 1946.
7
J_ DUNLQP
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2,408,760
ELEVATOR‘
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‘Filed Dec. 22, 1945
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INVENTOR
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Oct. 8,' 1946.
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J. D'UNLOP
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ELEVATOR
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. Filed Dec. 22, 1194s
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INVENTOR
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2,408,760
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J. DUNLOP
‘Oct. 8, 1946. >
7 2,408,760
ELEVATOR
Filed Dec. 22,‘ 19,45
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INVENTOR
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James ?an/0p. '
ORNEY
.
2,408,760
Patented Oct. ‘8, 1946
"UNITED STATESPATENT OFFICE
ELEVATOR '
James Dunlop, Ridgewood, N. J., assignor, by’
mesne assignments, to Westinghouse Electric
Corporation, East Pittsburgh, 2a., a corpora
tion of Pennsylvania
' Application DecemberZZ, 1943, Serial No. 515,257;
9 Claims. (01. 1s7_95)
2
of deck-edge elevators on airplane-carrier ships
Although the invention is illustrated and de-'
scribed in connection with a deck edge elevator
and the main measurements of ‘such an elevator
with the ?ight decks thereon.
now in use are. many, it may be used with dif
My’ invention relates to elevators and, more
particularly, to means for leveling theplatforms
_
In a typical ship of this character, the ?ight
deck overhangs the edge of the ship about 16',
and out of this overhanging part of the deck is
ferent sizes of platforms and with platforms of
of, the flight deck, and the whole platform struc
ture is suspended by a plurality of hoisting cables
position to be supported by ‘and to be raised and
other types of elevators.
1
. .
Referring more specifically to the drawings, I
have illustrated a deck edge elevator having a
notched a space for an elevator platform which
platform I0 disposed between a pair of guide rails
is about 60' long and 34’ wide and which weighs‘
approximately 60 tons. The platform extends 10 I] and I2 mounted on the outside of a ship hull
l3 (only a small portion of which is shown) in
approximately 18' beyond the overhanging edge
between a pair ofguide rails mounted on the out
lowered between a main deck (not shown) and a
I ?ight deck. I5 by a plurality of hoisting cables Itv
side of the ship hull. A plurality of guide ‘shoes. l5 , and I‘! attached to its fore and aft ends by hitches
I8 and IS. The hoisting cables may be operated
are mounted on the platform structure and dis
posed in slots in the guide rails for guiding the
platform between the guide rails.
In an elevator of this character and this size,
by any suitable means, such as a hydraulic engine
likethat illustrated and described in my co-pend
ing application Serial No. 515,992, ?led December
it is important that the platform should stay level 20 28, 1943, and’ assigned to the Westinghouse Elec
tric Elevator Company.
.
and ?ush with the ?ight deck when it is parked
thereat, so that the arrestor hooks on the air
,
The platform [0 may be constructed of seam
less steel tubing, structural steel sections and steel
plate welded together in bridge-like form to form
?ight deck without being caught. Therefore, one 25 a relatively light but strong structure 20.
The guide rails II and [2 are provided with
object of my invention is to provide for leveling
channeled faces 2! and 22 facing each other and
an elevator platform with its landing and main
are mounted on backing plates 23 and 24. The
taining it in level condition therewith regardless
backing plates are secured to the ship hull by a
of the position of any load on the platform.
Another object is to provide a leveling means 30 plurality. of horizontal brackets 25 which are
welded thereto to provide a strong support for the
for a ship elevator platform having a two point
planes landing on the ?ight deck will pass safely
over the platform and the adjacent edges of the I
lift which will cause it to stay level with the upper
deck of the ship regardless of any conditionsto
which it may be subjected.
‘
For a better understanding of the invention,
reference is made to the accompanying drawings,
guide rails.
1
The platform is guided in the guide rails by
four roller-type guide shoes 21, 28, 29 and 30.
The guide shoes 21 and 29 are mounted one above
the other on the aft end of the platform for en
gaging the channel 21 in the guide rail II. The
guide shoes 28 and 30 are mounted one above the
other on the fore end of the platform in position
edge elevator looking outboard from the inside
40 to engage the channel 22 in the guide rail l2.
of the ship with the guide rails in cross section,
Referring to Figs. 5 and 6, the guide shoe 2‘!
Fig. 2 is a top plan view of the elevator plat
comprises a cast metal body 32 anda side roller
form illustrated in Fig. 1, with parts of the ?ight
33 and an end roller 34 mounted therein. The
deck and the elevator platform broken away to
guide shoe body 32 is securely fastened to the
reduce the size of the drawing,
Fig. 3 is a view taken on the line III—III of 45 platform framework 20 by a plurality of bolts 35.
The side roller 33 is mounted on a shaft 36 which
Fig. 2,
.
is rotatably mounted in the upper cylindrical por
Fig. 4 is a view taken on the line IV-IV of
tion 31 of the body 32, so that it will bear against
Fig. 2,
either a renewable steel strip 38 or a renewable
Fig. 5 is an enlarged top-plan view of one of
steel strip 39 mounted on the side-walls of the
the guide shoes in its guide rail,
"
channel in the guide rail II to prevent lateral
Fig. 6 is a view taken on the line VI—-VI of
movement of the platform. I
1, illustrating the end roller in one of the guide
The guide roller 34 is disposed to engage the
shoes, and
inner face of the channel 2| to prevent end move
Fig. »7 is a view taken on the lines VII-v11 of
55 ment of the platform and is rotatably mounted
Fig. 6.
'
in which,
I
Figure 1 is a view in side elevation of a deck
2,408,760
3
4
on a pin 4! disposed in the forked end of a
The guide shoes 28, 29 and 3B and the slip
round shaft 42, slidably disposed in the lower
cylindrical portion d3 of the body 32. The end
per blocks associated therewith are constructed
in the same manner and are mounted on the
elevator platform in the same manner as the guide
roller 34 is biased into engagement with the in
ner face of the channel 2| by a coiled compres
shoe 21 and the slipper block 51 except that the
sion spring 45 disposed between the central face
guide shoes 29 and 3!! are mounted in what may
of a cavity 55 in the rear-end of the roller shaft
be'called'an upside down "relation to the guide
and the inner face of a cap 45, which is mounted
shoes 21 ‘and 28.
i
" ' "
"
'
on the cylinder 43 by a plurality of bolts 4?. The
A plurality of locks 65, 55, 5'l and 68 (Figs.
spring is selected with a steep characteristic to 10 2, 3 and 4) are provided for locking the platform
balance the weight of the platform.
The shaft
42 is prevented from rotating in the body 32 by
a pair of ?ns 49 on the inner side of the» cap 45
which extend into slots 48 in the rear end of the
shaft, so that the end roller 34 will always track
in a vertical direction in the channel 2!. The
holes in the cap 45 for the bolts 41 are made loose
so that the cap may be rotated slightlyto aline
the roller with its guide rail before the bolts
1 against the ?ight deck when it is to remain out
of normal operation for any length of time. The
lock 65 comprises a cast body ill which is se
curely fastened to the underside of the ?ight
deck l5, a lock bolt ‘H slidably disposed in the
casting and a stop member 12 mounted on the
‘adjacent end of the platform. The side of the
casting '55 adjacent the platform has a down~
wardly and inwardly sloping face or beveled sur
are tightened.
20 face 13 disposed to be engaged by an outwardly
A pair of bolts 51 and 52 pass loosely through
and downwardly sloping or beveled face ‘14 on the
the cap 46 and screw into the rear-end of the
shaft 42. These bolts are used only during as
sembly to hold the spring compressed until the
the ?ight deck.
platform is properly alined in the ‘guide rails.
After the platform is correctly positioned the bolts
?ight deck.
stop member '12 when the platform is raised to
The beveled faces 13 and ‘i4
cooperate to stop and center the platform at the
'
The lock bolt ‘H is provided'withan outwardly
5| and 52 are removed and watertight plugs are
inserted in the holes. Thus the spring is free to
bias the roller against the guide rail at all times.
and downwardly sloping or beveled face '15 for
engaging an upwardly and outwardly sloping face
'56 on the angular stop member 72 when in look
A rearwardly extending central projection 54 is 30 ing position. The rear-end of the lock bolt is
disposed on the rear-end of the shaft 42 to pro
connected to an operating rod 78 by a link '19
vide a means for limiting the rearward movement
of the shaft when the spring 45 is compressed by
movement of the platform toward the guide rail.
A hardened steel striking bar 58 is mounted on
the rear-end of the projection 54 by a press fit
and a pin 55 in position for engaging a “stop”
or bending bar 58.
The “stop” bar is dispOsed
across a pair of shoulders 59 at the ends of va
rectangular depression 50 in the inner side of the
cap 45 and is held in position by brass screws 5811
which pass through its ends into the cap 45.
The end of the striking bar is rectangular in shape
and a lever arm 80', so that rotative movement
of the rod 18 will move the lock bolt into orout
of its locking position. The lock 66 is construct
ed in the same manner as the lock 65.
The lock 67 comprises a casting 82 fastened
to the underside of the ?ight deck, a lock bolt
t5 slidably disposed in the casting 82 and a stop
member 84 mounted on the adjacent endv of the
40 platform. The rear-end of the lock bolt 83 is
connected by a link 85 and a lever arm 86 to the
locking rod 18, so that it will be moved into and
out of locking position with the lock bolt ‘H.
facing the central portion of this bending bar.
When the force exerted by the platform on the
guide shoe exceeds a predetermined amount, the
striking bar will engage the bending bar and bend
it into the space 55, thus relieving the strain on
the end roller when it exceeds the normal. amount
for which it is designed. The platform guide
rails and guide shoes are usually so designed that,
under normal conditions, a space 6! measuring
one-eighth inch exists between the striking bar
56 and the bending bar 58 to- permit that much
spring biased play of the roller 34 during normal
operation. The bending bar 58 is so selected as
to size and strength that it will bend and per
mit the end roller 34 to compress the spring 45
more than one-eighth inch only when a prede
termined dangerous pressure tends to move the
platform endways. The end of the striking bar
56 is rectangular in shape and ?ts loosely-into
a rectangular depression in the cap 45. A slip
per block 51 (Fig. 5) is mounted on each end of
the platform in position to engage the backing
The engaging surfaces of the bolt 83, the stop
45 84 and the casting 82 are horizontally disposed
so that they will prevent vertical movement of
the platform when the lock bolt is in locking
position but may permit a limited horizontal
movement of the platform. The lock 68 is con
50 structed in the same manner as the lock 61.
The locks are described and claimed in the co
pending application Serial No. 514,520, ?led De
cember 16, 1943.
It is important that the platform shall lie level
55 with the ?ight deck when it is moved thereto
and, in order'to insure this position of the plat
form, I have provided a cam N30 for engaging
‘the roller 34 at the aft end of the elevator and
a cam [ill for engaging the roller 34a at the fore
60 end of the elevator as the platform rides up'to its
position level to the flight deck. The cam I00
is removably mounted on the inner face of the
channel 2| at a point where its upper thickest
. portion will be engaged'by the end wheel Hand
65 the cam i0! is mounted on the interface of the
plate 24 and prevent further endwise movement 7
of the platform in case it forces the bending bar
to its bending limit. The end of the striking
bar 56 is rectangular in shape and ‘?ts loosely
into a rectangular depression in cap 46. The 70
bending bar and the slipper block construction
are illustrated, described and claimed in the co
pending application Serial No. 516,046, ?led De
cember 29, 1943, and assigned to the Westinghouse
Electric Elevator Company.
‘
channel 22 where its upperthickest end will be
engaged by the end wheel 34a when the platform
is flush with the ?ight deck. The distance the
cams extend outwardly from-the inner'face of the
channels may be adjusted by the use of suitable’
shims between the cams and the channels. -
The cams cooperate with the guide‘ shoe rollers‘
34 and 34a, the beveled faces 13 and ‘M at ‘the aft
end-of the platform, the beveled faces 13a and
75 14a on the lock as at the fore end of the platform.
aéoavco
andv'with thehoisting .cables'to levelthe platform‘:
I 1 I claim as my invention;;
?ush/with the ?ight deck. The hoisting cables
are setito'have a'stretch in them equal 'to' the
‘
v
H v. _
_
1. In an elevatorfor serving an’ upper ?oor;.a,
pair of guide rails, a platform disposedfbetween
weight ‘of the platform, plus‘ the total live-load
at both ends of the platform, when the platform,
is stopped at the ?ight deck.
6
made without departing‘ from its spirit-and Scope;
the guide rails, a stop device on ‘the ?oor for each
end of the platform, each stop device having a
downwardly and inwardly sloping face, astop~
I
The stretch is'obtained by placing stops on the
devicemounted on each end of the platform, each
?ight deck‘to stop the platform and by placing
of, said stop devices, having an outwardly and
stops ‘on the hoisting engine plunger at such po:-' 10 downwardly slopingface. for engaging the corre
sition that the engine will continue the hoisting ‘ spending. stop device on the floor, a cable'at each
pull on the cables after the platform is‘stopped at _
end of the platform for operating the platform
andipulling it vup against the ?oor to a ‘point
where the sloping faced stop devices on the plat
my copending application Serial No. ‘507,l32,>?1ed
15 form engage the sloping faced stop devices on the
?oor, and means disposed on the guide :rails for
As stated before, the end fwheels'34 and 34a
centeringv the platform with the stop devices at
maycompress their springs a distance equa1to
.the ?oor as the platform arrives thereat. '
'
oneieighthv of' an inch.‘ The cams extend out
'2.‘ In an elevator for serving an upper-?oor,‘
wardly' from the channel faces approximately
a pair of guide rails, a platform‘ disposed between
one-eighth of an inch. Therefore, when the plat 20 the'guide rails, a cable at each end of the plat-V
form is brought ?ush with the ?ight deck, the
form for operating, the platform, a vguide roller
end’ wheels'34 and 34a roll upon the cams and.
movably mounted on each end of the platform in
are moved inwardly to take up their one-eighth
position to. engage the guide rail thereat for guid
inch clearance and in this position‘ they center
ing, the platform between the guide rails, means
the platform ?rmly between the beveled edges 25. for biasing each guide roller toward its associated
the ‘?ight deck' until all of the stretch in the.
cables is taken up, as is described and claimed in
October21,“1943.
‘
‘
a
,
13 and 13a on the ?ight deck.
r
'
'
» guide rail, means for-limiting the rearward move
ment of each guide roller to a predetermined dis
tance, a stop device mounted on the parking floor
irln assumed operation of the elevator
for veach end ofthe platform, each of saidrstop
> It will be assumed that the platform has been 30. devices having an inwardly and downwardly
lowered below the ?ight deck and is now being
returned to the ?ight deck by the hoisting cables
l6 and I1.’ As the platform moves upwardly from
its lower position and nears its ?ight deck posi
sloping face, a stop device mounted on each end
vlower ends of the cams I00 and I'll and are
rives at the ?oor, and a cam disposed in each
of the platform,‘ each of said stop devices having
an outwardly and downwardly sloping face dis
posed to engage the sloping ‘faces on the stop de
35
tion, the end rollers 34 and 34a roll upon the
vices mounted on the ?oor when the platform ar
thereby moved inwardly against the biasing ef
fect of their compression springs. As the plat
form continues its upward movement, the'in
creasing thickness of the cams continues forc
guiderail for engaging the guide roller associated
therewith as the platform arrives at the parking
40 floor to force the guide rollers .to their rearward
ing the end rollers inwardly. The compression of
the springs forces the platform into its central
limit and thereby center the'platform with its
stop devices between the sloping faces of the stop
devices on the ?oor.
'
~
position with reference to the’beveled faces on
3. In an elevator‘for serving an upper ?oor,
the locks 65 and 66 and, as the platform reaches
a pair of guide rails, a platform disposed between
its ?nal position, the cams force the rollers 34 45 the guide rails, a cable at each end of the plat
and 34a inwardly until, the clearance back of them
form for operating the platform, an upper guide
is completely taken up and the platform is then
roller and a lower guide roller movably mounted
in a true central position with reference to the ,
on each end of the platform in position to en
beveled faces on thelocks 65 and 66.
gage the'guide rail thereat for guiding the plat
If the load on the platform is unevenly bal 50. form between the guide rails, means for bias
anced by being placed at the fore end of the plat
7 ing‘ each guide roller toward its associated guide
' form, the platform may be lower at its fore end,
rail, means for limiting the rearward movement
than it is at its [aft end.’ In such a case, the
of each guide roller to a predetermined distance,
platform will pivot on its end roller 34 as the
a stop device mounted on the parking ?oor for
beveled face 14 engages thebeveled face 13 and
each end of the platform, each of said stop de
the fore end of the platform will swing upwardly
vices having an inwardly and downwardly slop
into place under the pressure of the cables, until
ing face, a stop device mounted on each end of
the beveled faces 13a and 14a at the fore end of
the platform, each of said stop devices having
the platform, so that the platform will now lie
an outwardly and downwardly sloping face dis
60
?ush with the ?ight deck and. will remain in that
posed to engage the sloping faces on the stop
position, because the hoisting cables are at the
devices mounted on the ?oor when the platform
limit of the stretch for which they are designed,
arrives at the ?oor, and a cam disposed in each
the platform is in true center position between
guide rail for engaging the upper guide roller
the cams and the beveled faces on the platform
associated therewith as the platform arrives at
65
are in contact with the beveled faces on the
the parking ?oor to force the guide rollers to
?ight deck.
'
their rearward limit and thereby center the plat- '
By ‘the foregoing description it will be seen that
form with its stop devices between the sloping
I have provided a means for leveling along ele
faces of the stop devices on the ?oor, whereby the
vator platform at a ?ight deck which will bring
up pull of the cables when the platform arrives
it ?ush with the ?ight deck under all conditions 70 at the ?oor will cause it to cause the platform to
of loading, and which maintain it ?ush with that
lie ?ush with the ?oor.
deck under any condition of load.
,
4. In an elevator for serving a parking ?oor,
Although I have illustrated and described only
a pair of guide rails, a platform disposed between
one speci?c embodiment of my invention, many
the guide rails, a cable at each end of the plat
changes therein and modi?cations thereof may be 75
7
2,408,780
form, for supporting, raising and lowering the
form, a roller mounted in ,each guide shoe to
engage the associated guide rail forguiding the
platform along it, means for biasing each roller
platform, an upper and‘ a lowerguide roller mov
ably mounted on each end of the platform in
position to engage the guide rail thereatvfor guid
toward its guide rail, a block mounted ineach
ing the platform between the guide rails, means
guide shoe for limiting the rearward movement
for biasing each guide roller toward its guide
of its roller to a predetermined distance, a bev
rail, means for limiting the rearward movement
eled stop device at each end of the platform for
of each guide roller to a predetermined dis
stopping it at the deck, and a cam disposed on
tance, a beveled stop device mounted on the
parking ?oor for each end of the platform for 10 each guide rail, each of said cams having its thin
end disposed downwardly along its guide rail
stopping it at the parking ?oor, and a cam dis
and its, thick end disposed at the point where
posed in each guide rail for engaging the upper
the roller on the upper guide shoe roller rests
guide roller associated therewith as the platform‘
when
the'platform is at the deck, said thick end
arrives at the parking floor to force said upper
of each cam being approximately equal in thick
guide rollers to their rearward limit and thereby
ness with the predetermined limited rearward
center the platform with the beveled stops.
movement of the rollers.’
5. In an elevator for serving a parking ?oor,
8. In a deck edge elevator for serving a flight
a pair of guide rails, a platform disposed between
deck on. a ship,,a pair of guide rails, a platform
the guide rails, a cable at each end of the plat
form for supporting, raising and lowering the 20 disposed between the guide rails, a cable at eachv
end of the platform for supporting, raising and
platform, a guide movably mounted on each end
lowering the platform, said cables having a
of the platform in position to engage the guide
stretch in them equal to the weight of the plat
rail thereat for guiding the platform between
form plus the total live load at both ends of the
the guide rails, means for biasing each guide to
ward its guide rail, means for limiting the rear 25 platform, an upper and a lower guide shoe
mounted on each end of the platform in posi
ward movement of each guide to a predetermined
tion to engage the guide rail thereat for guiding
distance, a beveled stop device mounted on the
the platform between the guide rails, each guide
parking floor for each end of the platform for
shoe having a roller mounted on the outer end
stopping it at the parking floor, and a cam dis
of a shaft slidably disposed in the guide shoe,
posed in each guide rail for engaging the guides
as the platform arrives at the parking floor to 30 a spring disposed in each guide shoe for biasing
its roller toward the guide rail adjacent thereto,
force said guides to their rearward limit and
a block mounted in each guide shoe for limiting
thereby center the platform with the beveled
rearward movement of the roller and its shaft
to
a predetermined distance, a beveled stop de
6. In an elevator for serving a parking floor, 35
vice at each end of the platform for stopping it
a pair of guide rails, a platform disposed between
at the ?ight deck, and a cam disposed in each
the guide rails, a cable at each end of the plat
guide rail, each of said cams having its thin end
form for supporting, raising and lowering the
disposed downwardly along its guide rail and its
platform, said cables having a stretch in them
thick end disposed at the point where the roller
equal to the weight of the platform plus the total
on the upper guide shoe rests when the platform
live load at both ends of the platform, an upper
is at the ?ight deck, said thick end of each cam
and a lower guide movably mounted on each end
being approximately equal in thickness with the
of the platform in position to engage the guide‘
predetermined limited rearward movement of
rail thereat for guiding the platform between the
the rollers.
,
stops.
guide rails, means for biasing each guide toward 45
its guide rail, means for limiting the rearward
movement of each guide to a predetermined dis
tance, a beveled stop device mounted on the park
ing floor for each end of the platform for stop
ping it at the parking floor, and a cam dis
posed in each guide rail for engaging the upper
guides as the platform arrives at the parking
floor to force said upper guides to their rear
ward limit and thereby center the platform with
the beveled stops.
7. In a deck edge elevator for serving a deck
on a ship, a pair of guide rails, a platform dis
posed between the guide rails, a pair of cables for
operating the platform, an upper and a lower
guide shoe mounted on each end of the plat
9. In an elevator for serving a plurality of
floors, a pair of guide rails, a platform disposed
between the guide rails, a plurality of cables for
~ operating the platform, a guide movably mounted
on each end of the platform in position to en
gage the guide rail thereat for guiding the plat
form between the guide rails, springs disposed
between the guides and the platform for central
izing the platform between the guide rails, means
for limiting the rearward movement of each guide
to a predetermined distance, and cams disposed
on the guide rails for engaging the guides and
forcing them to their rearward limit as the plat
form arrives at a selected floor to positively cen
tralize the platform at that ?oor.
JAMES DUNLOP.
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