AUTOMATIC WEIGHING-SCALE. Page: 5 of 7
[2], # 5 p. : ill. ; 23 cm.View a full description of this patent.
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1,100,120
Upon that side of the machine that is
shown in Fig. 1, there is pivotally mounted
a substantially horizontal latch bar 33, the
pivotal connection with the receiver being
indicated at 34. The forward extremity of
the bar 33 is formed with a latch head 35
adapted to engage an angular bracket 36
mounted upon the adjacent member 1. The
angular displacement of the bar 33 about the
pivot 34 is limited by a keeper 37 secured to
the receiver, the displacement permitted be-
ing only sufficient to permit the latch head
35 to be engaged with or disengaged from
the bracket.36. As the loaded receiver tilts
to its forward limiting position, the latch
head 35 automatically enters into engage-
ment with the bracket 36, and maintains this
engagement. until the receiver has discharged
its contents. From the rear end of the bar
33 there depends an arm 38, having its lower
end bent outwardly from tfie receiver as in-
dicated at 39. The bent lower end of the
arm 38 is so disposed that the arm 32 will
contact with the portion 39 of the arm 38
just before the door 25 reaches its closed po-
sition. The arm 38 will thus be subjected to
a slight downward displacement producing
a sufficient pivotal movement of the bar 33
to disengage the latch head 35 from the
bracket 36. The empty receiver will then
immediately tilt to its rearward limiting po-
sition due to the weight 18, and as this dis-
placement takes place, the bracket 22 will
slightly raise the bar 20. As the receiver
reaches its rearward limiting position, the
bracket 22 passes the shoulder 21, thus per-
mitting the bar 20 to drop to its normal po-
sition, in which the receiver is locked against
forward displacement. On top of the sup-
porting frame, there is mounted a rectangu-
lar chute 40, through which material may
be discharged into said receiver. Within
said chute, a feed-wheel 41 is mounted fast
upon a shaft 42 transverse of the. machine,
the extremities of said shaft being passed
through the side walls of the chute and jour-
naled in bearings 43. Upon one end of the
shaft 42, there is mounted a large gear 44,
adapted to mesh with a pinion 45 fast upon
a shaft 46 mounted adjacent to the front
wall of the chute. That extremity of 'the
shaft 46 which carries the pinion 45 is jour-
naled in a bearing 47, mounted upon the
intermediate portion. of an upright bar 48,
pivoted as indicated at 49 upon the upper
front portion of the chute. 'The bar 48 is
adapted to undergo a slight .angulsr dis-
pfacement about the pivot point 49, sufficient
to bring the pinion 45 into or out of engage-
ment with the gear 44, the manner and pur-
pose of producing such a displacement being
hereinafter made clear. The other extrem-
ity of the shaft 46 is journaled in a bearing
50 pivoted upon a bracket 51 secured to the
receiver, the pivotal axis being vertical.The lower ernd4 of the bar 48 projects between
two spaced angular brackets 52 and 53, said
bracket being so disposed with relation to
said bar.that the bracket 52 will contact with
the bar when the receiver is tilting forward, 70
causing the pinion 45 to be disengaged from
the gear 44 just before the receiver reaches
its forward limiting position. Similarly
the bracket 53 will shift the bar 48 rear-
wardly. and bring the pinion 45 into mesh 75
with. the gear 44 just before the receiver
reaches its rearward limiting position. A
constant rotation will be communicated to
the shaft 46 from any suitable source of
power through a belt 54, engaging a pulley 8o
55 fast upon said shaft. It is apparent from
the foregoing explanation that the feed-
wheel 41 will revolve while the receiver is
being filled and will remain still while the
receiver is being emptied. 85
When the feed-wheel 41 is still, there will
possibly be a very slight flow of material
between said feed-wheel and the receiver
walls, if the material weighed is fine
grained. To prevent this small quantity of 90
material from entering the receiver while
the latter is discharging, a door 55a, hinged
transversely of the machine as indicated at
55b, is provided to the bottom of the chute
40 said door being automatically closed as 95
the receiver swings forwardly, by a screw
55c mounted at the top of the rear wall of
the receiver. As the receiver is returned to
its forward limiting position, the screw 550
releases the door 55a permitting the latter to 100
swing open as shown in Fig. 4. Thus after
the receiver has been loaded, no excess of
material can be discharged into it, until it
has been emptied of its load.
The lower portion of the supporting frame 105
is occupied by an auxiliary receiver 56, hav-
ing its top and bottom open and having its
front' and back walls inclined somewhat to-
ward each other from top to bottom. The
auxiliary receiver has a rigid relation to the 110
supporting 'frame and is so disposed as to
receive the discharge from the main receiver.
Within the lower portion of the auxiliary
receiver, there is mounted a feed-wheel 57
fast upon a shaft 58 transverse of the ma- 115
chine, having its extremities passing respec-
tively through the. side walls of the aux-
iliary receiver and journaled in '- earings 58a
respectively mounted upon the lower side
frame members 2. One extremity of the shaft 120
58 is made to project slightly outward be-
yond the correlated bearings to receive a
sprocket wheel 59. Rotation may be com-
municated' to said sprocket wheel and the
shaft upon which it is fast from the shaft 125
46 by a chain 60 engaging the sprocket wheel
59 at its lower end and engaging'at its upper
end a sprocket wheel 61 fast upon one end.
of the shaft 46. The feed-wheel 57 is
mounted sufficiently, close to the rear wall of 13a
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Carter, Edward D. AUTOMATIC WEIGHING-SCALE., patent, June 14, 1914; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth859179/m1/5/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.