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Патент USA US2119574

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June 7, 1938.
w_ M‘ DWYER
_
2,119,574
REFRIGERATOR CAR DOOR
Filed Oct. 19, 1936
6 Sheets-Sheet l’
F'i
5
William M?wyer'
June 7, 1938.
2,119,574
w, M. DWYER
REFRIGERATOR CAR DOOR
Filed Oct. 19, 1936
I
__4______
6 Sheets-Sheet 2
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_______
.?werzibr v
-
WzZlzkzmMDwyer'
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g:- '
-
June 7, 1938.
w. M; DWYER
‘REFRIGERATOR GAR DOOR
Filed Oct. 19, 1936
2,1 19,574
e Sheets-Shéet 3
frzverzz'ow
Willie!” M?wqer'
My
June 7, 1938.
W. M. DWYER
2,119,574
REFRIGERATOR CAR DOOR
Filed Oct. '19; 1936
e Sheets-Sheet 4
Irzizerz?yk
Williarrz M?wyer
June 7,
w, M_ DWYER
2,119,574
REFRIGERATOR CAR DOOR
Filed Oct. 19, 1936
6 Sheets-Sheet 5
Fig. 7
6
Irzvmiar .
.
M’Zllz'am M ?wyer
June 7, 1938. I
w_ M, DWYER
2,119,574
REFRIGERATOR CAR DOOR
Filed Oct. 19‘, 1936
6 Sheets-Sheet 6
Fig. 8 ‘
22
.
Inventor
Willdzm M?wyer
2,119,524
Patented June 7, 1938
UNITED STATES PATENT OFFICE
7 2,119,574
REFRIGERATOR GAR nooR
William M. Dwyer, Chicago, Ill., assignor to W. H.
Miner, Inc., Chicago, 111., a corporation of Del
aware
Application October 19, 1936, Serial No. 106,300‘
15 Claims.
(Cl. 20—23)
This invention relates to improvements in re
frigerator car doors.
'
tive relation with the keepers and effect opera
tion of the keeper engaging means in the ?nal
closing and initial opening movements of the
door, with slower movement of said arms in syn
,One object of the invention ‘is to provide a
door construction for refrigerator cars compris
produced by said 5
5 ing a sliding door member for closing the door . chronism with the movement
keeper engaging means.
_
r
opening of the car, and means for supporting the
A
still
further
object
of
the
invention
is
to
door for movement toward and away from the provide in a sliding door construction for re
side of the car, wherein simple and efficient man
frigerator cars, actuating means engageable with
ually actuated means is employed for moving the rugged and substantial ?xed keepers for either 1'0
9 door into the door opening and forcing the door forcing the door tightly closed after it has been ;
tightly closed or prying the door ‘open and mov
moved to partly closed position, or prying the
ing the same out of the door opening, so designed same partly open, the actuating means being de
that the supporting means is entirely relieved signed to operatively'connect with movable sup
, from strain during the ?nal closing and initial
7'5 opening operations while the door is being forced
tightly closed and pried open.
A further object of the invention is to provide
means of the character described in the preced
_
ing paragraph, which is so designed and arranged
4") that the projection of the parts thereof will not
exceed certain predescribed limits so that the
mechanism will clear the usual loading platform
structure, tunnel walls, and all other obstruc
tions encountered in standard railway practice.
:55
Another object of the invention is to provide
in a door construction of the characterherein
before described, e?icient, manually actuated
mechanism for successively moving the door into
the door opening and forcing the same to tightly
‘39 closed position or successively prying the door
open and moving the same to a position clear of
the car wall, comprising crank arms for sup
porting and moving the door into and out of the
door opening, and keeper and cooperating keeper
55 engaging means for effecting the ?nal closing :and
initial opening movements of the door, wherein
the keeper means is mounted on thecar wall and
the cooperating keeper engaging means is actu
ated independently of the supporting crank arms
~i0 during said ?nal closing and initial opening
movements of the door, thereby assuring tight
closing and forcible opening movements of the
door without subjecting the supporting means .to
any excessive strains during these operations.
~95
A more speci?c object of the invention is to
provide a door construction and operating means
therefor of the character described in the pre
porting means for the door to actuate the sup
porting means to either move the door into the
door opening to said partly closed position, or
withdraw the door from said door opening.
Yet another object of the invention is to pro
vide an operating means of the character set
forth in the preceding paragraph, which, during
the ?nal closing and initial opening movements
of ‘the door, is automatically disconnected from
the movable means for supporting and guiding 25
the
door.
~
7
I
‘
Other objects of the invention will more clear
1y appear from the description and claims here-é
inafter following.
'
'
In the drawings forming a part of this speci
?cation, Figure 1 is an elevational view, partly
broken away, of the side wall of a refrigerator
car, illustrating my improvements-in connection‘
therewith, said view showing the door closed.
Figure 2 is a viewcorrespo-nding to Figure '1, on
an enlarged scale, of the mechanism shown at the 35
lower left hand corner of Figure 1. Figure 3 is
a horizontal sectional view, corresponding sub
stantially to the line 3—3 of Figure 2. Figure
4 is a view, similar to Figure 3, but showing the
parts in position with the door withdrawn ‘from 0
the door opening clear of the side wall of the
car. Figure 5 is aibroken, vertical, sectional view,
on an enlarged scale, corresponding substantially
to the line 5-—5 of Figure 1. Figure '6 is a view,
similar to Figure 5, but showing the doorwith
drawn from the door opening to clear'the side
wall of the car. Figure '7 is a View, similar to‘
ceding paragraph, so arranged and designed that
Figure 1, illustrating another embodiment of the
the manually actuated means which effects open
ing and closing movements of the door controls
invention. Figure 8 is a View corresponding to
Figure '7, on an enlarged scale, of the mecha
nism shown at the lower left hand corner of Fig
ure ‘7. Figure 9 is a horizontal sectional view,
the operations of the crank arms and the keeper
engaging means to effect movement of the door
rapidly inwardly and outwardly through positive
actuation of the crank arms and to bring the
keeper engaging means into and out of coopera
corresponding substantially to the‘line 9-9;.of
Figure .8.
Figure 10 is a view, similar toi-Figure‘
2
2,119,574
9, but showing'the door withdrawn from the door
opening to clear the side wallof the car.
with end members 32-32 which’ are ?xed to said
shaft and have crank arms 33‘—-33 at the outer
In said drawings, 20 indicates the side Wall of . ends thereof extending radially therefrom and
the car, which side wall is provided with the provided with keeper engaging pin portions
usual door opening 2! closed by a singledoor 2,2.
The door 22 is slidable lengthwise of the car and
‘ is displaceable laterally in ,reversedirections to
either move the’door into, or Withdraw it from
the door‘. opening 2|. As shown, the cooperat
ing engaging edge faces of the door and walls of
34-34 at their outer ends. The keeper engag
ing portions 34—-34 are of generally cylindrical.
forinv and each has a ?attened face portion35'
for a purpose hereinafter described.
.
r .The supporting brackets C——C and C-C are
of similar design, the top brackets being arranged
the door opening are beveled and the usualinsu
reversely to the bottom brackets. These brack
lating packing material indicated at 23 is eni-I ets are preferably in theform of castings se—'
ployed to seal the joint between therdoor and cured to the outer side of the door, each casting '
walls of the door opening.
15
'
‘ ,
Referring ?rst to the embodiment of the inven
having a pair of vertically’ disposed, partly cylin
drical bearing sleeves (it-36 formed integral .;
tion illustrated in‘ Figures '1 to 6 inclusive, my
improvements jcomprise' broadly top and bottom ‘therewith. >The bearing sleeves 36~—36 of each
‘ tracks A'g-A; carriers B——B cooperating with the
bracket are laterally spaced as shownmost clear~
ly in Figures I, 2, 3,1and 4, and extend outwardly '
, bottom ‘track Aipairs of top and bottom'sup
from the main body portion’ of the casting to the
20 porting brackets C-C andC-C; a 'pairiofver - edge
of the door. The sleeves 36-436 are en
in
tically disposedkcombined, operating and keep’
er engaging crank shaftsyD-eD; pairs of top, and
bottom keepers,E-+E and E‘_—-E;, pairs of top and
25
bottom supporting crank shaftsfF,—-F andF-F;
pairsof sliding rack members ,G—-G and 'G-QG;
interrupted pinion gears
and_I-I—H on the
combined operating, and 1 keeper engaging crank
shafts .D—,-D meshingwith, the rack members
G.—,_,Gjand GfGyand interrupted pinion gears
K.—_Krand
onthe supporting crank shafts
F-F and F——Ffc'ooperating with the rackmem
bers ,G.—_G,an,d (3-. .
The, top, and bottomltracks AQ_VA, , than are
disposed respectively above and below the door
35: opening 2|, ‘are of suchalength that the door
ZZmay be slid entirely cleanof the door opena
ing. The bottom, track A is in the form of an’
elongated barrhaving a substantially ?at, ver
40
larged in diameter attheirinner ends, asindi
cated at 31-31, and these enlarged sections open
into a ‘horizontally arranged housing portion, 38.‘
of said casting.
The housing portion 38 has ‘a'
horizontally extending, interior guidevvay J38 ion
the innerside thereof adapted to slidingly ac
commodate andguide the corresponding rack
member G.
.
Q
‘
V
'
‘
1
" Thetop and bottomtendr members 32~32 of
eachshaft D are provided with cylindrical bear
ing sections inwardlyjof the crank end portions
thereof, which bearing sections are journaled in ,
the innermost sle'e'ves36—'36 of the correspond; '
ing top' and bottom brackets 0-0. The parts
are so proportioned that the top and bottom
keeper engaging crank members ‘of each, shaft
D project a suf?cient distance beyond the top and
bottom edges of' the door to properly cooperate
tically disposed, section? ?xed torthe side wall with the corresponding pair of keepers E‘,—E.
of thev'car, a hgrizontally disposed outstanding. Each shaft D is provided with two’ gear members
section 257 at the bottom of the section 24, and a
H——H, these gear members being preferably
formedintegral with‘the end members 32-—3Z.
‘edge of the section 25,,the ‘?ange section 26 form- ‘ The gear memberH of each end member 32 is
ing'qthev rail member'proper" of the track.v The disposed at the inner end (if the cylindrical bear
‘ top track A comprises an elongated, ?at, barlike' ing section thereof and occupies the enlarged"
section 72,‘! secured to the side wall of the cal‘. and portion 31 of the innermost bearing sleeve 36 of 45
' an elongated, bar‘ member f 28_,'of substantially, the cooperating supporting casting C.; As‘sh'own
vertically disposedr?ange section 26 at the outer
,Z-shaped cross section ?xed to’ the section 21,v , most clearly in Figures 3 and 4, each ofthe gears ‘
with the lower?ange of theformer spaced out
50
WaIdIYTIQm the Section 121 110 Provided down
, wardly facing guide vchannel, 2,9’ therebetween.
As ,most clearly shown in Figure 1', each track A
H has the teeth thereof interrupted, thereby pro_ .
viding part gear members for a purpose herein
after pointed out. ' Each end member 32 also has 50
a short cylindrical bearing section beyond the
is provided jwith a stopmemberlSO atthe left corresponding gear H, said bearing section being
hand end thereof, said stop member, being prefer» journaled in a bearing member 39 of therhousi'ng
'60
,ablyin'the form" of a block ?xed ,to-the track in .4 portion 38 of the bracket C,
any ‘suitable mannen,‘ The stop block 30 lof the
The supporting crank shafts F'—F and F—F
bottom track A is preferably secured to the ver-v are arranged in pairs at opposite sides of the
tical section, 24 Uofsaid track and extends into door, one member of each pair at the top and the
the channel between ‘said, section and the flange other at the bottom of said door. .Each' crank
26. ‘The stop block 3ll'of_>,the_'top track is'seated
in the channel 29'thereof and is ?xed to the side
walls' of“said tracki
"
"
~
"
'
‘
,
‘l
l The combined ‘operating :and vkeeper engaging
shafts D"—D are arranged vertically and'disposed
at opposite‘ sides of thedoor, ‘each shaft‘D being
' rotatably‘supported'b'y the corresponding‘top and
55
shaft F comprises a vertically disposed, cyliné '60'
dricaleshaft portion 40, a radially disposed arm
4 I: at the outer end of said shaft portion,ga verti
cally disposed, cylindrical, bearing projection or
pin 42 at‘ the outer end of the armldl, and a gear '
memberK formed integral with the shaft portion
40 adjacent to the innerend of the latter. Each
crank shaft F has the shaft portion 40 vthereof
tofrthe door adjacent to'the top and bottom edges . ,journaled in the outer lbearing sleeve36 of the '
thereof. pEachjshaftD is provided with an op-" corresponding supporting casting C and has the ,
erating handle lever 3|, which is pivoted to the gear K thereof accommodated in the enlarged
shaft .for swinging movement in a vertical plane, section 31 of saidsleeve. The teeth of the gear 70
so, that it may occupy either the horizontal po
K of each shaft F are interrupted, as clearly
sition shown. in Figure 1 or may be dropped to a
shown in Figures 3 and/l, for a purpose herein‘
vertical position parallel to said shaft.‘ At ‘the after. pointed out.
7
‘ , bottom brackets C’—C,'which brackets are secured
toprandbottomrends, each shaft Dis provided.
The crank, shafts E-F andrFTF. serveto
75
2,119,574.
support and guide the door in its movements into
and out of the :door opening, and are slidingly
guided by the top and bottom tracks A-A.
The carriers B-B which cooperate with the
bottom track A support the bottom crank mem
bers F-F.
Each carrier B is in the form of an
elongated slide having enlarged end portions
housing anti-‘friction supporting rollers 43-43
which are rotatably journaled in ‘said slide :and
project therefrom to engage with said bottom
track A. These anti-friction rollers are prefer»
ably grooved, as shown in Figures 5 and 6, to
receive and ride on the upstanding ?ange 25 of
said bottom track A. Substantially midway “be
tween the ends thereof, each carrier B is pro
vided with a vertically disposed, cylindrical
bearing opening 44‘ in 'which'the bearing or pivot
closed, as illustrated in Figure .1. Additional
latch means 50-50 of any well-known design is '
also provided for ‘locking the operating levers
3l-3l in position when the same ‘have ‘been
swung through a straight angle from the ;posi— 1
tion shown in Figure 1, in rotating the shaft to
open the door. When thus locked by the latch
members 50-50, thelevers ~3l-3'l of the shafts
D-D ‘hold the latter and theintergeared crank
shafts F-F and F-F against rotation to hold 10
the door in parallel :relation to the side Wall of
the car and against lateral displacement while
‘the same is being slid along the tracks .A-A.
The operation of my improved ‘mechanism
shown in Figures 1 to 6 inclusivein opening the 15
door is as follows: With the door closed, as shown
in Figure 1, after unlocking the handle levers
3 I-3 I , each lever is swung outwardly away from
pin 42 of the corresponding bottom supporting
crank shaft F is journaled. The bearing pin
portions of the top crank shafts F-F extend
the door, thereby rotating the corresponding
into the channel 29 of vthe top- track A and carry
anti-friction rollers 45-45 which are journaled
thereon for rotation about vertical axes and sub
stantially ?t between the side walls of said track
As will be evident, the shafts D-D will thus @be
rotated in opposite directions. Except for the
fact that the shafts D-D are rotated in opposite
to properly support and guide the top crank arms
for sliding movement lengthwise of the car. As
will be evident, the door 22 is thus supported for
sliding movement lengthwise of the car and for
movement ‘into and out of the door opening by
the top and bottom crank shafts F-F and F-F,
the arms of which have pivotal swinging con
nection with the supporting and guiding carriers
on said tracks, the rollers 45-45 forming car
riers which cooperate with the top track A.
The rack members G-G and G-G are all of
similar design. Each rack member vG is in the
form of an elongated bar of channel-shaped cross
section guided in the ‘horizontal guideway 138 of
the corresponding supporting casting C. Each
rack G is provided with two sets or series of rack
teeth 46 and 41, said two sets of teeth being
spaced apart‘as clearly shown in Figures .3 and
4, and the set 41 being of greater length than
the set 46 and meshing with the teeth of the gear
01 H of the corresponding end member of one of
the shafts D.
The two sets of teeth are so ar
ranged that the set 46 is out of mesh with the
gear K of the supporting crank shaft member F
when the parts are in the position shown in Figures 1, 2, 3, and 5, and are brought into mesh
with said gear when the rack is moved a suffi
cient distance to the right, as viewed in Figures
1, 2, and 3, to effect rotation of the crank shaft F.
The keepers E-E and E-E are preferably in
the form of castings secured to the side wall of
the car in pairs at opposite sides of ‘the door
opening, the members of each pair being in ver
tical alignment and disposed respectively above
and below the door opening 2!. ‘Each keeper E
is provided with an outwardly opening, inclined
guideway which forms, in effect, a :cam groove
or way 48, adapted to accommodate the keeper
engaging pin portion 34 of the crank arm 33 of
the corresponding crank member of one of the
shafts D. These keepers E-—E and E-E are so
positioned that, when the door 22 is moved in
front of the opening 2| and the crank arms F-F
and F-F are rotated to swing the door inwardly.
the keeper engaging portions 34-34 and 34-34
of the shafts D-D will be aligned with and enter
into the slots or cam ways 48-48-4'8-48 of the
keepers.
Latch means 49-49 of any well-‘known ‘type
is ‘employed to lock the operating handles 34-3!
of the shaftsD-D' in the position with the :door
shaft D.
These handle levers may be actuated i
either simultaneously or successively,.as desired.
directions, the operation thereof ’ is the same in
each instance. Upon rotation of either of the
shafts D, the top and bottom gears H-H thereof
which are in mesh with the top and bottom racks
G-G will effect sliding movement of said racks,
the racks G-G associated with the shaft D at 30
the left hand side of the door being moved to the
right, and the racks G-G associated with the
shaft D at the right hand side of the door being
moved to the left. During rotation-of each shaft
D, the keeper engaging crank members thereof, ‘
which are in operativeengagement with ‘the cor
responding keepers E-E, will pry ‘the door out
of ‘the door opening. During this movement of
the shafts, the keeper engaging crank members
will leave the cam ways of the ‘keepers E-E and
the toothed rack sections 46-46 of the racks
G-G will be brought into mesh with the inter
rupted pinion gears K-K of the crank members
F-F and rotate the latter to swing the door
outwardly to the position shown in ‘Figure 4. -
When the parts are in the position ‘shown in
Figure 4, the shaft D will have been rotated
through an arc of approximately 180° and the
operating handle ‘lever ‘3! ‘thereof will be disposed
at the side of the shaft opposite ‘to that occupied
in Figure l. The attendant then locks the lever
3| to the door'by means of the latch 50, thereby
holding the shaft D against rotation and through
the geared connection with the crank shafts F-F,
also looking the latter in ?xed position. As will
be evident, when both shafts D-D have ‘been
thus operated and locked in position, the door
will be held spaced from the side wall of "the
car a sufficient distance to clear'fsaid wall, as
clearly disclosed in Figures 4 and '6. The at
tendant then slides the door along the tracks to
completely clear the door opening. In closing
the door 22, the same is slid to the position in
front of the door opening 2!, .as shown in Figure
4. ‘ The actuating levers 31-31 are then unlocked
and the shafts D-D rotated in reverse directions
to the directions hereinbefore described,'thereby
sliding the racks G-G and G-G and rotating
the supporting crank members F-F and F-F to
swing ‘the door 22 into the door opening. During
this rotation of 'the shafts D-D and the crank
members F-F and
the keeper engaging
crank ends of the shafts D-D will be brought
into alignment with the cam ways ‘of the keepers
E--E and E-—E; Asthekeeper engaging or crank
v4.
. 2,119,574.
pin portions 34—-34 of' the crankiarms of each
E-‘E. The door is thus forced open 'in'the sam(
shaft D enter the cam ways of the keepers, the
teeth 46-46 of the racks G-G will clear the
manner as the construction illustrated in Figure:
gears K—K, thereby permitting free rotation of
the crank members 3I-—3l during the remainder
the keeper engaging crank ends of the shaft];
will pass, out of the cam slots of the keepers E-gE
of the door closing operation. {
l to 6 inclusive. As the door is pried outwardly
'
and at the same time the teeth 5l-'—5l of the
gears P-'P will be brought into mesh with the
Continued rotation of the shafts D—D will
bring the crank pins 34—34 into engagement with
the outer walls of the'cam ways of the keepers
10 'E—-E and cam the door inwardly to the position
‘teeth 52+~52 of the gears R_—R and'upon: fur
ther continued rotation of the shaft D, the crank
shafts F—F will berotated to swing the arms
thereof outwardly ‘and completely withdraw the
shown'in Figures 1 and 3. r‘ The operating handle
levers 3I—'3'l of the shafts D—D are then locked
door 22 from the door opening 2|, as shown'in
in'position by the latch members 49-49, as shown
in Figure 1. The gears H—H and H—-H of the
15 shafts D—D arerat all times in mesh with the
Figure
beemployed ‘without effecting, or altering the op-j
V
'
and 35—35 of the'crank pins 34—34 and til-34
V
' are in: flat bearing engagement with' the outer
as,
walls
clearly
of 'the‘slots'ofwthe
shown in Figure
keepers
3, thereby'locking.
K;T{‘and
the
'
'
-
>
ner as described in’connection with the 'con
struction shown in Figures 1 to’ 6 inclusive; As»
'will be evident, in the closing operation'the'gear
disengaged from the teeth 52 of the gear B.
when the keeper. engaging crank ends of: the
shaft D enter the camslots of the keepers
thus leaving, thercrank shafts F—-F 'free‘to'ro
. shafts D—D against accidental rotation.
Referring next to the embodiment of the inven-V
non illustrated in'Figures '7, 8, 9, and 10, the con
'
teeth 5| of the gears P will become completely
When the dooris closed, the'flat faces 35'——35
25
i:
members of the shafts D—D, in the same'man
. plete setsof teeth aroundtheir'circumference may ,
V
‘
opening and then 'cam the .door to tightly closed
position by means of the keeper engaging crank
‘20 need not be interrupted and gears having com
.
'
in a reverse direction to swing the crank shafts
F—F inwardly to move the door into the door
racks G—G and G-G, and as the rotation of
these shafts 'is through an arc not greater than
180°, only partial sets of teeth arerequired' on
these gears, but,‘ as will be evident, .the teeth
eration of the mechanism.
10.
In closing the door, each‘ shaft D is'rotated
tate as the arms thereof are'swung through in—'
ward‘movement of the door by the action of
the keeper engaging crank members.
' f
"
I have herein shown and described what I now
consider‘ the: preferred manner of carrying’ out
the racks G—G and G—G are omitted and the 7 my invention, but the same is merely illustra-'
tive and I contemplate all changes and modi?
35 gears on the combined operating and keeper en,
gaging shafts D'—-D are adapted to mesh directly cations that come within the scope of the claims
with the gears on the supporting crank shafts
‘F—F and F—F, and that the supporting‘brackets
Iclaimr
1. In a door '’
construction’ for refrigerator'cars
struction is substantially the same as that illus
trated in Figures 1 to'6, with the exception that
appended
, for the shafts D—D and the crank shafts 'F—-F
40 and F—F, which correspond to the brackets 04-0
and C—C, are modi?ed accordingly. These ‘sup
porting brackets are indicated, by fM'—M and
M—M in Figures 7, 8, 9,‘ and 10.
45
'7 50
"
'
As shown’ in'the last named ?gures, the end
members 32;;32 of each shaft D are provided with
integral , enlargements! forming gear members
hereto.
'
'
'
‘
‘
-
having a wall member provided with a door open
ing, the combination with a door, adapted to close ,
said opening; of guide track means on said car;
carrier means slidingly guided on ".said guide
track means; and'means for moving ‘said door 7
to open or close the same; including a manually
actuated operating member‘movably mounted on
P——P which ‘have interrupted teeth 5l,—5l, and 37 the door, ?xed keeper means *with respect to
which the carrier means is movablefrnovablei
the cooperating supporting shafts F—F are pro
vided with-integral enlargements forming gears, means supporting the door on said carrier means,
means for actuating said, movable means by oper?
R—R which have interrupted‘ teeth 52—r52. 'The
bearing portions of each shaft D are rotatably
supported inf outer bearing sleeve sections'53-53
formed on the corresponding top and bottom sup;
: porting brackets M—M, and the bearing portions
55 of the cooperating crank shafts F—F are jour
naled in the inner bearing sleeve sections M—M
of said brackets. 7 Each bearing bracket M is pro
vided with a'suitable housing portion’55for. the
ation of said member toYmove said door either
into or out of. the door opening, and means on
said operating member engageable with saidv
keeper means for either prying the door'open or
forcing the same tightly closed.
'
~ '7 ‘
2. 'In a door construction for refrigeratorcars
having .a ‘wall member provided with a door
opening, the combination with a door adapted "
to close‘ said opening; of guide track meansro'n ~
'60
'As shown'most clearly in Figures 9 and 10, the said car; carrier means .slidingly' guided on said .
?rst tooth at the right hand end of the set of track means; and means for moving ‘said door, ‘
to open or close the same including a manually
teeth 5| of the gear P is shortened so that it
will clear the second tooth from the left hand - actuated operating ‘member movably mounted onv
end of therset of teeth 52 of the gear R, where; said door, ?xed keeper meanswith respect to' k
'by engagement of said end tooth of "the gear P which said carrier means is movable, keeper en»
with the end tooth of the set of teeth 7,52'01’ the. gaging means on said operating member engage 65
gearsPahdR;1"f
gear
R
is
assured.‘
'
,
.
K
>
'
'
'
'
"
, " In the operation ‘of the mechanism'shown in
Figures 'Tto 10 inclusivarassuming that the door
70 22 'is' in the closed position shown in Figures ,7,
' 8,’ and 9', rotation of the shaft D in a clockwise
direction,.as viewed in Figure 9,’ effects outward -'
able with said keeper means'for'either forcing
said door tightly closed or prying the samerpart
1y open, movable means supporting the door on '
said carrier means for movement toward ‘and
away from the door opening, means'for transa
Vmitting motion from said operating member to
camming of the door through operation of the ' said movable means foractuating the latter to "
keeper engaging crank ends of theshaft D, which
75 crank ends are in engagement with the keepers
move said door either into, the door openingto
engage said keeper engaging means with the
?xed keeper means or out of the door opening
7,5
5
2,119,574
to disengage said keeper ‘engaging-means from
said ?xed keeper'means.
3. In a door construction for refrigerator cars
having a. wall member provided with a door
opening, the combination witha door adapted
the crank arm during part of the rotation of said
operating‘bar.
'
I
'7. In a door construction for refrigerator cars
havingr‘a wall member provided with a door open
ing, the combination with a door adapted to close
to close said opening; of guide track means on
said car; carrier means slidingly guided on said
guide track means; and means for moving said
said opening;'of guide track means on'said'wall
member; carrier means slidably guided on said
track means; ?xed keeper means on the car; a
door to open and close the same including a man
ually actuated rotary operatingl bar mounted on
the door, ?xed keeper means on the car with re
supporting arm rotatably journaled at one end
on the door and at the other end on said carrier
means; an operating shaft rotatably mounted on
spect to which said carrier means is movable,
suppoiting arms rotatably mounted on the door
and pivoted for swinging movement on said
carrier means, keeper engaging means on said
operating bar engageable with said keeper‘ means
for forcing the door either tightly closed or pry
ing the same partly open, and drive means con
necting said operating bar and arms for rotat
ing the latter to- displace the door to either en-p
gage said‘ keeper engaging means with the keep
ers or disengage the same therefrom.
4. In a, door construction for refrigerator cars
having a wall member provided with a door
opening, the combination with a door'adapted
to close said opening; of guide track means on
said wall member; carrier means slidably guid
ed on each track; ?xed keepers on the car wall;
rotary supporting crank shafts mounted on the
door, said shafts having the outer ends of the
crank arms thereof pivotally supported on said
carrier means; a manually actuated rotary oper
ating bar mounted on the door; keeper engaging
means on said bar engageable with said keep
ers; and interrupted gear means operatively con
necting said operating bar and crank shafts to
rotate the latter during part of the door opening
and closing operations.
5. In a door construction for refrigerator cars
having a wall ‘member provided with a door
opening, the combination with a door adapted
to close said opening; of guide track means on
said wall; carrier means slidably guided on said
track means; ?xed keeper means on the car
wall; swinging arms pivotally supported at their
outer ends on said carrier means and swinging
ly supported at their inner ends on the door
for guiding said door either into or out of the
door opening; a manually actuated rotary oper
ating shaft on the door, said shaft having keeper
50 engaging means engageable with said keepers;
and gear means connecting said arms and oper
ating shaft for swinging said arms, said gear
means including driving and driven members,
one of said members having interrupted teeth
55 to effect disconnection of said gears during part
of the opening and closing movements of said
door.
6. In a door construction for refrigerator cars
having a wall member provided with a door open
the door,v said ‘ shaft having keeper‘ engaging
means rotatable therewith and engageable with
said keeper means; and intermittent driving gear
connections between said shaft and arm for inter
15'
mittently effecting rotation of the latter dur
ing rotation of said shaft.
'
8.I-In a ‘door construction for refrigerator cars’
having a-wall member provided with a door open
ing,‘ the combination with a door adapted to
close said opening; of guide track means on ‘said
Wall member; carrier means slidably guided on
said track means; ?xed keepers on said wall;
supporting crank arms rotatably mounted on
said door and pivotally supporting the door on
said carrier means; a rotary operating shaft
mounted on said door, said shaft'having keeper
engaging crank members cooperating with said
keepers; and means driven by said operating
shaft for rotating said arms with respect to the
30
door while said keeper engaging crank members
are disengaged from said keeper means, includ
ing intermeshing gear means having the toothed
portions thereof interrupted to effect disengage
ment of said gear means during operative en
gagement between said keeper engaging crank
means and keeper means.
.
9. In a door construction for refrigerator cars
having a wall member provided with a-door open
ing, the combination with a door adapted to close 40
said opening; of guide track means on said wall
member; carrier means slidably guided on said
track means; ?xed keepers on said wall; support
ing crank members journaled on the door and
having the outer ends of the crank arms thereof 45
journaled on the carrier means; a rotary operat
ing shaft on said door having keeper engaging
means thereon engageable with said keepers; and
cooperating interengageable rotary gears fixed
to said operating shaft and crank members for 50
driving the latter, said gears having the teeth
thereof interrupted to e?ect disengagement
thereof during part of the rotation of said shaft. ,
10. In a door construction for refrigerator cars
having a wall member provided with a door open 55
ing, the combination with a door adapted to close
said opening; of guide track means on said car;
carrier means slidingly guided on said track
means; keeper means ?xed to said car wall; a
rotary operating bar on said door having means 60
60 ing, the combination with a door adapted to close
thereon engageable with said keepers; rotary
said opening; of guide track means on said wall
member; carrier means slidably guided on said
eccentric to said operating bar; radial supporting
arms on said shaftspivotally supported at their
track means; ?xed keeper means on the car; a
supporting crank member rotatably mounted on
65 the door and having the outer end of the crank
arm thereof journaled on said carrier means; a
manually actuated rotary operating bar mounted
one the door, said bar having keeper engaging
70
crank means adapted to engage with said keeper
means; and means for rotating said crank arm
including a sliding rack member, and cooperating
gears on said crank arm and operating bar, said
rack having the teeth thereof interrupted to ef
fect
disengagement of said rack from the gear of
75
supporting shafts on said door journaled on axes
outer ends on said carrier means; and intermit
65
tent drive means operatively connecting said op
erating bar to said shafts for rotating the lat-v
ter during rotation of said operating bar.
11. In a door construction for refrigerator
cars having a wall member provided with a door
opening, the combination with a door adapted to
close said opening; of guide tracks on said car;
swinging supporting arms slidingly guided at
their outer ends on said tracks and rotatably con
nected at their inner ends to the door; gear 75
' 6
2,119,574
meansrfor rotating said arms on ‘said'door; a
rotary operating shaft on said door; driving gears
?xed to said shaft; sliding racks on said door
reciprocated by said gears, said racks having in-'
terrupted toothed engagement with said gear
means for intermittently driving the latter to im
part rotary movement tov said arms; keepers on
said car wall; and keeper engaging means on said
shaft rotatable therewith and engageable with
said keepers to force said door either tightly
closed or pry the same open.
12. In a doorconstruction for refrigerator cars
having a wall member providedjwith a door
opening, the combination with a door adapted
15 to close said opening; of 'guide tracks on said
teeth of :saidjrack‘rbeing'interrupted tohpermit
disengagement ofisaid‘ rack from the gear of
said
crankshaft.
1‘.
‘o
'
-
'
,
’
14. In a ‘door construction for refrigerator cars,
havinga wall: member provided with a door
opening, the combination ‘with aodoor adapted
to close saiduopenin'g; of guide tracks'on said
wall member; supporting crank shafts journaled
on said door and having‘swinging connection
with said tracks; keepers’ on the Year wall; ro-QI
tary keeper engaging crank members mounted
on the door; and means for rotating said keepers
engaging crank members and. shafts including
reciprocating rack means operatively connected
to gears on said keeper engaging crank members
car Wall; supporting crank shafts journaled on ' and
crank shafts.
" '
‘
said door and having the outer ends thereof
swingingly supported from ‘said tracks; gears on
said crank shaftsgeach of said gears having van
. 20V
'
interrupted set’ of gear teeth thereon; keeper
/ means on the c'ar'wall; a rotary operating bar
vjournaled on said door; gears on said bar mesh
ingwith said interrupted sets of teeth of said
?rst named gears; and keeper engaging crank
25
members on said rotary ‘shaft 'engageable with
said keeper means.
i
13. In’ a door construction for refrigerator
cars having a wall member provided with a door '
opening, the combination with a door adapted’
to close said opening; of guide tracks on said
wall member; supporting crank shafts journaled
on said door and having swinging connection'
[with said tracks; keepers on the car wall; ro
tary keeper engaging crank members omounted' I
on the door; and means for rotating said keeper
engaging crank members and crank shafts in
cluding driving connections between said keeper
engaging crank members and crank shafts for
opening; thercombination with a door adapted to
producing synchronized rotary movement there
wall; a supporting crank shaft journaled on said‘
door and having swinging connection with said
of to" swing said ‘crank shafts‘on said tracks to
displace said door ‘either inwardly or outwardly
30 close said opening; of guide tracks on said car
tracks; a gear on said crank shaft; ‘a keeper
on the car wall; a rotary keeper engaging mem
35 ber on said door engageable with the keeper for
forcing the door tightly closed or prying the same
partly open; a gear ?xed to said rotary keeper
engaging member; and a reciprocating rack bar
on said door cooperating with the gears of said
40
315. In a door‘ construction for’ refrigerator
cars having a wall member provided with a door
crank shaft and keeper engaging member, the‘
with respect to the side of the ‘car and either
bring said keeper engaging members into opera?
tive engagement with the keepers or remove thev
same from said operative: engagement and ro
tate said keeper engaging members while engaged‘
35
with the keepers to either force said door tightly’
closed or pry the same partly open.
WILLIAM M. DWYER.
40
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