Improvements in Weighing Apparatus for Vehicles.
Year: 1890

page_text: COMPLETE SPECIFICATION.
[Communicated from abroad by THE WANAMAKER INTERNATIONAL CAR SCALE
COMPANY, of Indianopolis, Indiana, United States of America.]
Improvements in Weighing Apparatus for Vehicles.
1, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Heretofore the weighing of the loads of vehicles, particularly those of railway
freight cars, has been attended with considerable uncertainty. By the use of
ordinary track scales it is only possible to obtain the gross weight of the car and its
load, and the scale itself, because of the vicissitudes of weather, is apt to vary in
result, while the weight of the car also varies materially from the same cause. In dry,
hot weather, the car becomes thoroughly dried, and is obviously much lighter in that
condition than in stormy weather, when the structure becomes somewhat saturated
with water, or covered with snow and ice. From these causes, then, that accurate
weighing of loads which is desirable, in order that just and equitable charges for the
carrying of the freights may be made, has been rendered impracticable, and, in order
that no injustice should be done to the shipper, an allowance or deduction of a
considerable amount is usually made from the weights shown by the scales. To avoid
this, and obtain an accurate weight, so that all the freight carried may be fully charged
for, is obviously of great importance to the railroad companies, as well as a measure
of justice between different shippers. This, my invention is intended to accomplish;
and it consists, generally speaking, in interposing a weighing mechanism, and means
for throwing it into and out of operative condition, between the running gear of the
vehicle and its body or platform, which body or platform, when the weighing
mechanism is in operative condition, also becomes the platform thereof. I am aware
that it has previously been proposed to combine weighing mechanisin with the body
of a vehicle in such a manner as to permit of the load being weighed without
removal, but such previously proposed devices have not embodied the invention herein
shewn, described and claimed.
Referring to the accompanying drawings, which are made a part hereof, and on
which similar letters of reference indicate similar parts,
Figure 1 is a top or plan view of the running gear of the car, and of the
mechanism of my invention the platform or body of the car being shown in outline,
and the framework thereof in dotted lines;
Figure 2, a longitudinal sectional view, looking upwardly, in the direction
indicated by the arrows, from the dotted line 2 2 in Figure 1;
Figure 3, a front elevation;
Figure 4, a plan view of the scale and one set of the parts connected thereto, on
a larger scale;
Figure 5, a front elevation showing the scale-beam and immediately adjacent
parts separately;
Figure 6, an elevation of a portion of the mechanism, including one set of levers
and one cylinder, as seen when looking upwardly, in the direction indicated by the
arrows, from the dotted line 6 6 in Figure 4;

page_text: substantially the same parts as Figure 6, the section being taken on the dotted
line 7 7n Figure 4;
Figure 8, a transverse sectional view looking toward the left from the dotted
line 88 in Figure 7;
Figure 9, a detail sectional view on the dotted line 99 in Figure 8;
Figure 10, a detail sectional view looking toward the right from the dotted
ne 10 10 in Figure 7;
Figure 11, a detail sectional view looking toward the right from the dotted
line 11 11 in Figure 7; and
Figure 12 a detail horizontal sectional view looking downwardly, in the direction
indicated by the arrows, from the dotted line 12 12 in Figure 7.
The foregoing described drawings show ny principal or preferred construction,
which will now be described in detail, after which alternative constructions will be
shown and described. In said drawings the portions marked A represent the frame-
work of the car B the running-gear; the scale-beam; Da rock-shaft on which
said scale-beam is mounted; E E E E pairs of levers connected to said rock-shaft,
and running thence to 'near the bolsters of said running-gear; F F F F sets of
levers connected to the ends of the levers E E, and running thence to the bolsters ;
G. cylinders containing pistons G₁adapted to be operated to throw the scale
mechanism into operation; H pipes running from said cylinders to a pump, located
preferably near the scale-beam, and L.said pump..
The pump and cylinders and connecting pipes constitute a hydraulic jack, by
which the scale mechanism is thrown into operative condition. As will presently
appear, the arrangement and construction of this hydraulic jack may be varied. I
desire to state, at this time, that the combination with scale mechanism interposed
between the running gear and body or platform of a car, of a hydraulic jack of
suitable construction, is an important feature of my invention, and 1 desire to be
understood as claiming such a combination broadly, irrespective of particular features
of construction.
I may further say that the pistons G³ may be regarded, for the purposes of this
invention, as movable bearings, adapted to be lifted against appropriate knife-edges
on certain of the scale-beams, and thus throw the weighing mechanism into operative
condition. While I regard the hydraulic jack apparatus shown and described herein
as the preferable means for actuating these bearings, other means may be substituted
without departing from my invention, and I regard the combination in a scale
apparatus of substantially this character, of these movable bearings, with suitable
means for lifting them, as a vital feature of my invention, irrespective of the
particular means employed to lift them.
The body A and running gear B of. the .car, are or may be of any ordinary or
desired construction, and need no special description. To them, or to suitable
hangers connected thereto, are attached the bearings for the mechanism of my
invention. As at present at ranged, all this mechanism is attached to the body A,
or secured within a box or casing attached thereto, except that small plates 6 are
provided "(see particularly Figure 7) with which the points of the levers F F F F¹
will come in contact.
The scale beam C is or may be any ordinary scale beam, and it is rigidly mounted
on the rock-shaft Dat the rear end, and is preferably guided and steadied at its
front end by a hanger (. It is provided with the usual, weights and adjusting
devices common to scale beams.
The rock-shaft D rests loosely in bearings or hangers A', depending from the-under
side of the car body, as shown most plainly in Figures 8 and 9, and carries, rigidly
attached thereto, small projecting arms D³, in the ends of which are mounted short
knife-edge shafts d, which pass through. holes in the lower ends of the links D,
which links extend-up and engage with similar knife-edge shafts e on the levers E.E'.
These arms D extend in the same general direction froin the rock-shaft D as does
the seale-beam (although preferably at somewhat of an angle therewith. When at

page_text: rest, said rock-shaft lies loosely on the bottom of the bearings, as shown in Figure 9.
Its upper side is a knife-edge, and, when the scale is in operation, this edge bears
against the upper side of said bearings.
The pairs of levers EE and E' E are connected to the rock-shaft D by links, as
just described, and extend thence past the cylinders G, and are connected to the
arms F F F F by links E². As shown most plainly in Figures 1 and 4, the
individual levers of each pair are arranged substantially parallel with each other, and
at substantially equal distances from a central line running longitudinally of said car,
and thus reach four points substantially equi-distant from the centre of said car.
These levers E E E E are provided with short knife-edge shafts e, which engage
with the links D; with knife-edge shafts e', which engage with the links E'; and
with knife-edge shafts e2 which engage with the pistons G of the cylinders G.
The pairs of levers F F and F F¹ are substantially continuations of the pairs of
lovers EE and EE, and, with said pairs of levers EE and EE', form sub-
stantially pairs of compound levers. As just stated, they are connected to said
levers EE and EE by links E². They are mounted in hangers F³, and their
extreme ends (see particularly Figures 6 and 7) are formed substantially like
ordinary scale knife-edges, and are adapted to come into contact with the plates bon
the holsters of the running-gear B. Near the ends which are connected to the
levers E and E', they pass through small supporting hangers F³, which carry the
weight of these ends and of the ends of the levers E and E¹, when the weighing
attachment is not in use. The hangers F are jointed; as shown most plainly in
Figures 7 and 11, and the two parts are connected together with a bolt or pintle f
This permits the slight rocking which may be necessary in order that the points f
shall come squarely upon the plates & notwithstanding any oscillation of the car.
Said levers and F1 are preferably so formed that the hangers F2 shall pass
through them, as shown in Figures 7, 11 and 12, and are provided with knife-elge
shafts, which engage with said hangers. They are also divided or bifurcated at
the rear ends, where they engage with the links E2, and have knife-edge shafts³
whereby said engagement is effected.
The cylinders Gare firmly secured to the under side of the car, upon appropriate
frame-work or hangers, as shown most plainly in Figures 7 and 10. The arrange-
ment is best shown in Figure 4, in which one of said cylinders is shown in horizontal
section. As shown most plainly in Figure 7, the pipes H communicate with the
lower ends of said cylinder, underneath their pistons G. Said pistons G' are fitted
in said cylinders, and are provided with appropriate packing to prevent leakage, as.
shown, and adapted to be forced upwardly by pressure from the pump, and lift the
levers of the weighing apparatus, which, in turn, lift the car body from its bearings on
the running gear. It will be observed that said car body thus becomes the platform of
the scale. Said pistons G have transverse slots cut through them, and through
these slots pass bars g, which are firmly attached to the cylinders and which prevent
more than a predetermined movement of said pistons.. This is so that the weighing
apparatus, after it is brought into proper relation, cannot be forced further, by any
use of the pump. This movement of the pistons brings them up so that the yoke-
shaped tops thereof shall come in contact with the knife-edges e on the levers E
and E¹ and raise said levers; and also through the links E raise the levers F F¹ ;.
and also through the links D and the arms B rock the rock-shaft D, on which the
scale beam is mounted, and thus enable the weighing to be done. The relation of
the pistons to the knife-edges eis best. illustrated in Figure 7.
The pipes H lead from, the cylinders G to the pump 1 in the manner which is
shown most plainly in Figures 1 and 4, and as will be readily understood. The
pump I, with which said pipes connect, is shown as an ordinary force-pump, but any
other suitable pump may be used. A suction-pipe I is shown as extending down
into a fluid tank I, and there is also shown a by-path pipe 13, including a relief-
valve attachment, which will be particularly described in the description of the
alternative construction, this feature being identical in both forms of the apparatus.
I will now proceed to describe the alternative construction of my invention herein-
> {

page_text: before mentioned. Generally speaking, it consists in re-arranging the levers and
bringing them into a smaller space, immediately adjacent to the scale-beam and
pump, and in providing two sets of cylinders and pistons, one of which shall operate
directly upon the car body or platform to raise it, instead of through levers, and the
other of which shall be connected therewith, and operate upon the levers connected
to the scale-beam-the pump being substantially the same in both cases.
In the drawings showing this construction
Figure 1ª is a plan view of the running gear of an ordinary freight car, including
a small plan of the scale apparatus of my invention;
Figure 2 a side clevation of such a car;
Figure 3ª a side elevation of the weighing apparatus separately;
Figure 4 a central sectional view of said apparatus on the dotted line 4 4 in
Figures 1 and 7-the various parts being shown in the positions they occupy when
the scale is at rest and out of engagement with the load;
Figure 5 a transverse sectional view looking toward the left from the dotted
line 55 in Figure 3* ;
Figure 6 a similar view looking toward the right from the dotted line 66 in
Figure 3:
Figure 7 a plan view as seen when looking downwardly from the dotted line 7 7
in Figure 3ª ;
Figure 8
valve therein;
a detail sectional view of portions of the by-path showing the relief-
Figure 9 a sectional view of one of the cylinders of the hydraulic jack adjacent
to the scale-levers, and
Figure 10" a similar view of one of the cylinders at a corner of the car.
In said drawings, the portions marked A represent the bolsters forming part of
the ordinary running-gear of a freight car; B the platform or body of the car;
C cylinders mounted on the bolsters A at the four corners of the car; D pipes
connecting said cylinders with the pump; E said pump; F a tank containing a
fluid, preferably oil, also connected to said pump; G cylinders, having pistons g
arranged to operate the levers of the scale apparatus, and connected to the cylinders C
by pipes G G G3 G; H and I the two scale-levers, and J the scale-beam.
The running-gear, including the holsters A, and the platform or, body of the car,
is, or may be, generally of any ordinary or desired construction; and, not being
peculiar to my present invention, will not be further described herein, except
incidentally in describing said invention. Underneath, and secured to the platforin
or body B, however, is a box or casing B1, which encloses the scale mechanism, and
the pipes loading from the scale mechanism to the cylinders on the bolsters are also
attached to the under side of this body or platform, as will be readily understood.
Attached to said body or platform B are also projections B³, (or equivalent suitable
surfaces,) with which the pistons in the cylinders C will come in contact in
operation, and thus raise said platform and its load to the position where it is ready
for weighing.
The cylinders C are mounted upon or attached to the bolsters A of the running
gear, and contain pistons C adapted to come in contact with bearing points (as B²)
on the under side of the body or platform of the car. As shown in Figure 10ª,
the pistons have packing upon their under sides, which prevents leakage when in
use. In the same castings with the cylinders are chambers C', which communicate,
by central openings, with the seats upon which the pistons rest, and which also
communicate with the pipes D leading to the pump, while the pipes G₁ G* G³ G*
which run from the cylinders adjacent to the lovers of the scale, (for the form of
connection to said cylinders see particularly Figure 9) lead from the piston-seats, as
shown most plainly in said Figure 10. Centrally located in the chamber C³, and
having stems which extend up through the openings leading to the piston-seats, are
small valves C, which preferably have springs below them, which cause them to
follow the pistons C³ as they rise, as shown most plainly in said Figure 10", and as
will be readily understood. When the flanges on these valves reach the partitions

page_text: which divide the chambers from the piston-seats, they operate to close the openings
extending through from said chambers to said piston-seats, thus preventing any
further supply of fluid from entering said piston-seats. The effect of this is, (as the
car is almost always somewhat unevenly loaded) that each corner is brought up
successively to the same level. When the pump is operated, the effect is to force the
fluid through the pipes D to the chambers and to the piston-seats. The lightest
corner will, of course, be raised first, and it is so raised until the further passage of
the fluid is shut off by the valve, as just described. The next heavier corner of the
car is then raised in the same manner, and so on, until finally the heaviest corner of
the car is raised. When this point in the operation is reached, the pump cannot be
further operated, and the operator will become aware of the raising of all four
corners of the car to the desired level by being unable to move the pump handle any
further. The pressure (per square inch) in the cylinders adjacent to the scale being
obviously the same as that in the corresponding cylinders on the bolsters, the load is
thus thrown onto said scale mechanism, and by manipulating the weights on the scale-
beam, the weight of the load can be ascertained, in an ordinary and well known
manner. The pressure in the chambers C1 being somewhat greater than that
required to lift the heaviest loaded corner of the body or platform, the valves Care
kept tightly closed thereby and by their springs, and the pressure from the pump.
thus effectually kept from interfering with the operation of the scale, as will be
readily understood.
is
The pipes D lead from the cylinders C to the pump E. They may be all of one
size, but I prefer to make them of varying sizes, according to the quantity of fluid
passing through them. For that portion which extends from the pump to the
point where the pipe first branches, one-half inch pipe is a suitable size; from that.
point to where the pipes branch again, leading to the individual cylinders, three-.
eighths inch pipe is a suitable size, and from the last named points to the cylinders
themselves, one-quarter inch pipe is a suitable size.
The pump, as before stated, is substantially identical in construction and arrange-
ment with the pump shown in the drawings illustrating the principal construction.
As in that construction, it is preferably securely mounted on the under side of the
car, or secured to the top of the box enclosing the scale mechanism, and is connected,
as just described, to the system of pipes D. It is operated by a handle or lever E',
preferably pivoted to the top of the enclosing casing, as shown, by a pivot e². Its
handle preferably consists of a socket which remains permanently in place, held by
the pivot, and a removable lever adapted to be inserted in said socket. By this
means a much longer handle may be used, and, consequently, greater leverage on the
pump be obtained, than could otherwise conveniently be done. Running by the
pump from the pipe D to the tank F is a by-path pipe E³, in which is a valve E...
This valve is preferably a form of safety-valve, by the use of which a greater
pressure than is desired is guarded against. In Figure 8 I bave shown a form of
valve which will accomplish my purpose, in which a spring, adjusted to a prede-
termined resistance, rests upon the valve, and holds it to its seat until its force is
overcome by the pressure from the pump. This valve is also so constructed, by
means of a hand-wheel, lever, or other equivalent device, that it may be opened
whenever desired, and the fluid permitted to run back from the cylinders to the tank,
which relieves the scale mechanism from the weight of the car body or platform and
the load thereon.
The tank F is a tank of ordinary construction, and is preferably mounted in the
same enclosure which contains the scale mechanism. It contains a fluid, preferably..
oil, adapted to be pumped into the cylinders, as described. This tank, like many
other parts of the apparatus, is or may be identical in both constructions.
The cylinders G correspond in number to the cylinders C, and are respectively
connected to said cylinders by the pipes G¹ G² G³ G. Said pipes are preferably
quite small, one eighth inch pipe being sufficient for the purpose. The connections
are such that the aggregate average pressure in said cylinders, when the load is..
raised in accordance with the method of my invention, is equal to the aggregate

page_text: average pressure (per square inch) upon the pistons in the cylinders C; and the
combined pressure in the four cylinders being applied to the levers of the scale
apparatus, enables the weight of the load on the platform or body of the car to be
accurately taken, notwithstanding it may be unevenly distributed over said platform
or body. The pistons of these cylinders G are adapted to come in contact with
knife-edges on the scale-levers H and I, and raise said levers, and thus throw
the mechanism of the scale into operation. These pistons are provided with packing,
as shown most plainly in Figure 9ª; and, as will be seen by an examination of said
Figure, the construction is or may be of an ordinary or any desired character:
In order that the oscillations of the body or platform on the running-gear, when
this last described arrangement is employed, shall not strain the joints in the pipes
and thus cause leakage, I prefer to make such of said joints as would be subjected to
such a strain of the ball-and-socket or an equivalent variety. Joints of this character
are formed in the pipes leading from the pump to the cylinders C, as well as in the
pipes leading from said cylinders C to the cylinders G. Joints of this character
may also be used in the pipes forming part of the construction of apparatus first
described.
.
The scale-levers H and I are respectively mounted by means of ordinary knife-
edges in holes formed in upright standards GG; which standards are preferably
cast integrally with the cylinders-G. Said scale-levers are connected together at the
centre by a link H¹ and the lever I is connected to the scale-beam by the link I'.
The operation is, when the fluid is pumped into the cylinders, that the pistons g in
the cylinders G first raise these levers by coming in contact with the knife-edges
The movement continuing, the knife-edges hi next come in contact with the upper
sides of the lower holes in the standards G' G, and, as the scale-levers further
continue their upward course, the knife-edges come in contact with those sides
of the holes in the link H which are nearest each other. The knife-edge ³ next
comes in contact with the upper-side of the lower hole in the link I, forcing it up
until the lower side of its upper hole comes in contact with the knife-edge on the
scale-beam J, and carries said scale-beam up until its knife-edge j comes in contact
with the upper side of the upper hole in the standard G. When this point is reached
all the scale parts are in operation, and the apparatus is ready to weigh the load
upon the car, which, in either construction of my apparatus, or any modification
thereof, is done by the applying of weights and the moving of the weight on the
scale-beam, in an ordinary and well-known manner.
The scale-beam J is mounted' by means of its knife-edge j in the holes in the
upper ends of the standards G. Its forward end preferably passes through an
opening in the upper end of the standard Go, and is steadied thereby., In most
respects it is similar to an ordinary scale-beam, and operates much in the usual well-
known manner.
In the constructions which have been described it will be noticed that the platform
or body of the car when the scale apparatus is not in operative condition rests in the
ordinary manner upon the running-gear. When thrown into operative condition it
is raised from its points of rest, and its weight, together with that of its load is
thrown upon and carried by the scale apparatus. When the scale apparatus is again
thrown out of operative condition, said platform descends to and rests upon its points
of rest as before. It will be further observed that the edges of the knife-edges of
the scale apparatus are only in contact with their bearings when said scale apparatus
is in operative condition. When it is out of operative condition said, knife-edges
rest upon their backs, and they are thus protected from wear at all times except
when-in-actual use.
The general operation of my said invention. may be briefly recapitulated as fol-
lows: When it is desired to weigh a load; the pump is operated, which forces the
fluid from the source of supply through the pipes into the cylinders, which either
directly, or through levers, according to the arrangement, raise the car body or platform.
and the load thereon, which is then sustained by the scale mechanism. The
transverse bars g in one case, and the valves C² in the other, prevent the pistons
:
..

page_text: from being forced up too far, and cause the several corners of the car to stop at the
same height, notwithstanding that the load may be unequally distributed on said car.
As will be readily understood, the scale-beam acts as a lever on its rock-shaft or
pivots, and the other levers are thereby moved. Said scale-beam, being properly
adjusted and graduated, the placing of weights thereon weighs the load on the car,
in the ordinary and well known manner. The levers being arranged as shown and
described, a very slight weight upon the scale-beam will exert a large pressure upon
the points which operate upon the car body, and thus a very heavy load can be
weighed with but a comparatively small weight on the scale-beam.
The pump and tank are shown in both constructions as located immediately along-
side the scale beam. They may, however, be located at a distance, as on the loco-
motive, and, while oil is the fluid generally used, air, or any other suitable fluid may
be substituted. The drawings, where not otherwise specified, show the position and
rélative arrangement of parts of the apparatus' when it is out of operative condition.
Where letters of reference are used in the claims, they are those used in describing
my principal construction. By the term "hydraulic jack "whenever used herein, I
mean to include all apparatus of a kindred character to that shown, in which a fluid
pump (such as an air pump) makes a feature.
Having now particularly described and ascertained the nature of my .said inven-
tion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondent I declare that what I claim, is:-
First. The combination, with the running-gear and the platform or body of a car
or vehicle, of a hydraulic jack interposed between said running-gear and said
platform or body, whereby the load may be raised and supported, and a scale
apparatus connected thereto, whereby the weight of the load may be ascertained,
said scale apparatus being mounted on said platform or body.
Second. The combination, in a weighing apparatus, of a platform having support-
ing points extending toward a point of rest when said apparatus is in operative
condition, the scale levers, appropriate knife-edges, bearings adapted to be raised
against certain of said knife-edges and raise said levers and lift the platform off its
rest into operative condition, and means for raising and lowering said bearings, the
platform being thereby permitted to descend upon and be supported by its rest,
and the bearing edges of the knife-edges thus wholly freed from contact when the
apparatus is out of operative condition.
Third. The combination, in a weighing apparatus, of a platform, the scale-levers
the scale-beam, knife-edges on said scale-levers and scale-beam arranged to permit
their bearing edges to drop out of contact when out of operation, connecting links
or bars between said scale-levers and between certain of said levers and said scale-
beam, and lifting bearings whereby the scale apparatus is thrown into or out of
operative condition.
Fourth. The combination, in a weighing apparatus, of the scale-beam, the scale-
levers, knife-edges thereto, connecting bars or links, a platform provided with
supports independent from the scale mechanism, independent rests for said scale
mechanism, and vertically movable bearings adapted in their upward course to first
raise the scale mechanisin into engagement with the platform, and then, through
said scale mechanism, raise said platform off its independent supports.
Fift. The coinbination, in a weighing apparatus, of the scale-beam, the scale-
levers, knife-edges thereto, connecting bars or links, the platform, bearings located
between the points where the scale-levers engage with said platform and the point
where they are connected together, and mechanism by which said bearings can be
forced up against said knife-edges on said .scale-levers.
Sixth. The combination, in a weighing apparatus, of a platform for the load,
adapted to be supported by points of rest or by the scale mechanism. knife-edges on
the scale-levers intermediate the points where they engage with said platform and the
point where they are connected together, and bearings adapted to be raised against

page_text: "
and thus raise said platform from its points of rest and support it b
the scale mechanism.
Seventh. The combination, in a weighing apparatus, of the platform, bearings c
projections. adapted to support said platform, a scale mechanism located below sai
platform and engaging therewith by means of knife-edges, other knife-edges in sai
scale mechanism, vertically movable bearings adapted to come in contact with sai
last mentioned knife-edges, and mechanism by which said vertically moving bearing
may be lifted and said scale mechanism thus thrown into operation, and into engage
ment with the platform which is also thus thereby lifted.
Eighth. The combination, in a weighing apparatus, of a platform having down
ward projections embodying the bearings for the knife-edges, the scale levers having
knife-edges which enter said bearings, the bearing edges whereof are presented
upwardly, and other knife-edges at a central point, the bearing edges to which face
oppositely to each other, and a link forming bearings for said last mentioned kuife-
edges and connecting them, and other knife-edges, the bearing edges of which are
presented downwardly, located intermediate of the knife-edges which support the
platform and the link by which they are connected together, and vertically movable
bearings adapted to engage with said last mentioned knife-edges, whereby when
said bearings are lifted the scale mechanism is thrown into operation and the platform
also lifted, and whereby when said bearings are depressed the scale mechanism is
thrown out of operation, and the knife-edges are permitted to rest on their backs
relieving their bearing edges from.contact.
Ninth. The combination of a hydraulic jack arranged upon and adapted to lift
the load of a car or vehicle, a scale apparatus connected thereto, a tank containing
a fluid, and a cock and by-path whereby the fluid may be returned to the tank, and
the scale apparatus thus released from operative condition.
Tenth. The combination of a hydraulic jack arranged upon and adapted to lift
the load of a car or vehicle, a scale apparatus connected thereto, a tank containing
the fluid, a by-path whereby the fluid may be returned to the tank, and a valve in
said by-path adapted to be opened by the pressure of the fluid therein when the
predetermined pressure is reached.
Eleventh. The combination, in a weighing apparatus for cars, of a rock-shaft, a
scale-beam rigidly mounted on said rock-shaft, arms also rigidly mounted on said
rock-shaft, and a series of levers and links connecting said arms with said levers,
said apparatus being mounted on the car body, substantially as set forth.
Twelfth. The combination, in a weighing apparatus for cars, of a series of levers
secured to the under side of the car body, a scale-beam connected to said series of
lovers, cylinders arranged below knife-edges on certain of said levers, and a pump
connected with said cylinders, whereby the pistons thereof may be forced upwardly
against said knife-edges, and said levers thus be operated to sustain the weight of the
car body and its load.
Thirteenth. The combination, in a weighing apparatus for cars, of the running-
gear, the car body, a scale beam, a series of levers connected thereto and interposed
between the car body and the running-gear, the terminating levers being suspended
upon the under side of the car body and extending over and adapted to engage with 4
the upper surfaces of the bolsters of the running gear, hangers for securing said
levers to the under side of the car body, said hangers being divided and the parts
secured together by a pivot-bolt running transversely to the knife-edges on the levers,
and said knife-edges.
Fourteenth. The combination, in a weighing apparatus for cars, of the car body, 5
the running-gear thereto, the scale-beam, a
apparatus for operating the same secured to the under side of the car holy, the
series of levers connected thereto,
terminal levers F and F being suspended to said car body by hangers F' and F³,
and extending over the bolsters, and adapted to raise the car body and its load by
being lifted into contact with said bolsters, said hangers F' being divided and thus 5
capable of oscillation.

page_text: Fifteenth. The combination, in a weighing apparatus for cars, of the car body,
hangers or supports secured to said car body, levers mounted in said hangers or
supports, cylinders, also mounted in hangers or supports, the pistons whereof are
adapted to come in contact with knife-edges on said levers, links connecting said
levers, a rock-shaft, arms thereon, links also connecting said levers with said arms,
and the scale-beam on said rock-shaft, said several parts being arranged and
operating substantially as set forth.
Sixteenth. The combination, in a weighing apparatus for cars, of a series of
levers suspended from the car body, and adapted to be forced into position to carry
the weight of said car body and its load, pistons for effecting such result, said pistons
being slotted and provided with bars passing through said slots and attached to the
cylinders, whereby the movement of said pistons is limited, as predetermined.
Seventeenth. The combination, in a weighing apparatus for cars, of the rock-
shaft D, the scale-beam C thereon, the four levers EE and E' E', links D³,
connecting said shaft to said levers, the four levers F F F F¹, links connecting the
corresponding ones of said sets of levers together, hangers F2 and F3 carrying said
levers F F and F F', the running-gear B, and bearing plates on the bolsters of
said running-gear with which the points of said last-mentioned levers will come in
contact when the scale apparatus is operated, and means whereby said operation is
effected.
Dated this 90th day of Ontabor 180n
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.