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Патент USA US2132590

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Oct. 11,’ 1938'.
E. H. WATERMAN
2,132,590
DOOR LATCH
Filed Dec. 50, 1936
if"
2 Sheets-Sheet 1
Oct. 11, 1938.
E. H. WATIERMAN
2,132,590
DOdR LATCH
Filed Dec. 50, 1936
2 Sheets-Sheet 2
v EDW/N H. MTEEMJV,
M
2,132,590
Patented Oct. 11, 1938
vUlixiif'iioI STATES
"PATENT oFFICE ‘
2,132,590
DOOR. LATCH
Edwin H. Waterman, Munhall, Pa.
Application December 30, 1936, Serial No. 118,398
3 Claims.
(Cl. 105—308)
This invention particularly relates to an ad
justable door latch which is adapted to be used
on heavy doors, such as those on railway hopper
cars.
One of the objects of this invention is to pro
vide a door latch which can be installed with a
minimum amount of labor.
Another object of this invention is to provide
a door latch with a hook member which has a
10 plurality of positions in which it can be assem
bled.
'
The foregoing and further objects will be made
apparent by referring to the following description
and the accompanying drawings, in which:
15
Figure 1 is an elevation of one embodiment of
my invention;
Figure 2 is an elevation of my improved door
latch after the initial step in the assemblythereof ;
Figure 3 is a transverse sectional elevation on
'
20 line III—III of Figure 2;
Figure 4 is an elevation of my improved door
latch after being further assembled; and
Figures 5, 6 and 7 are elevations of modi?ca
tions of my invention.
Referring more particularly to the drawings,
the numeral 2 indicates generally a door latch
which is mounted on a hopper 4 of a railway hop
per car (not shown). The hopper 4 has a side
plate 6 and a door 8 which is hinged at its upper
30 edge. A ?ller-plate ID, or other suitable means,
is secured to' the side-plate 6 to provide a base
for the remainder of the door latch 2. The ?ller-.
plate I0 has holes II, a hole I2, and a hole I3
therein which align with holes previously made
35 in the side-plate 6. Initially the ?ller-plate I0
is secured to the side-plate by a rivet, or other
suitable means, through the hole I3 and thereby
held in its ultimate position.
-
A hollow trunnion I4 is formed integral with
40 the ?ller-plate I6 and surrounds the hole I2.
A hook I6, having a bearing aperture I8, is ful
crumed on the trunnion I4. The hook I6 is
adapted to be adjusted relative to a keeper-bar
I'l secured to the door 8. The keeper-bar I‘! is
45 ?xedly positioned on the door 8 and is adapted
to be engaged by the hook I6. However, rela
tively large tolerances are permitted in construct
ing the hopper 4 so that the position of the
trunnion I4 relative to the keeper-bar I'I varies
50 considerably in different hoppers. Therefore,
the position of the hook I6 on the trunnion I4
must be variable in order to position the hook
I6 thereon in proper relation to the keeper-bar
I1. To pivotally mount the hook I6 on the trun
65 nion I4, the hook may be provided with a bear
ing block 20, adjustable lengthwise of the bear
ing aperture I8. The bearing aperture I8 is of
such size that the hook I6 can be adjusted ap
preciably relative to the keeper-bar H by shims
22 or similar devices.
In Figures 5, 6,,and 7 I have shown modi?ed
forms of bearings for the hook I6. In this con
struction a split or two-piece bearing 2I is sub
stituted for the bearing block 20. The halves of
the bearing 2| may be of varying dimensions 10
lengthwise of the bearing aperture I8 in the hook _
I6, as shown in Figures 6 and 7 , so as to provide
for adjustment of the hook relative to the keeper
bar I'I without the use of separate shims.
A bracket 24, having holes 26 therein which
are in the same relative position as the holes
II and I2 in the ?ller-plate I0, may be used as
the outer member of the door latch 2. Rivets,
or other suitable means, are placed through the
holes 26, II and I2 and the side-plate 6 to per 20
manently secure the door latch 2 to the hopper
4. The bracket 24 may pivotally carry a pawl
28 which is adapted to bear upon the hook I6
and lock it in engagement with the keeper-bar
IT. A ?ange 30, having an aperture therein, may
be associated with the bracket 24 to facilitate
the use of a crow-bar, or the like, in closing
the door 8. The motion of the hook I6 may be
limited by a stop 32 which is carried by the
30
bracket 24.
While I have shown and described a speci?c
embodiment of my invention, it will be under
stood that I do not wish to be limited exactly
thereto, since various modi?cations ‘may be made
without departing from the scope of the inven 35
tion as de?ned by the following claims.
I claim:
1. A door latch including a ?ller-plate adapted
to be individually secured adjacent a door,‘ a
trunnion associated with said ?ller-plate, a hook
having a bearing aperture therein, a bearing block
mounted in said bearing aperture and adjustable
lengthwise thereof, said bearing block being ful
crumed on said trunnion, and shims for adjust
ably positioning said hook on said trunnion.
45
- 2. A door latch including a ?ller-plate adapted
to be individually secured adjacent a door, a
trunnion associated with said ?ller-plate, a hook
having a bearing aperture therein, a bearing block
mounted in said bearing aperture and adjustable 50
lengthwise thereof, said bearing block being
adapted to be fulcrumed on said trunnion, shims
for adjustably positioning said bearing block in
said bearing aperture, a bracket for holding said
hook and said bearing block on said trunnion, and 65
2
.
I
2,132,590
means securing said bracket and further secur
aperture therein, a bearing block mounted in
ing said ?ller-plate adjacent said door.
3. The combination with the hopper of a rail
said bearing aperture and adjustable lengthwise
thereof, said bearing block being fulcrumed on
said trunnion, and shims for adjustably posi
way car having a hinged closure, of a latch
mechanism comprising a keeper-bar secured to
and extending from said hinged closure, a ?ller
plate secured to the side-plate of said hopper
adjacent said keeper-bar, a trunnion associated
with said ?ller-plate, a hook having a bearing
tioning said bearing block in said bearing aper
ture whereby said hook can be properly posi
tioned relative to said keeper-bar.
EDWIN H. WATERMAN.
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