Apparatus for Treating and Assembling the Ingredients for the Manufacture of Paving Compositions.
Year: 1897

page_text: Date of Application, 12th Apr., 1897-Accepted, 14th Aug., 1897
CUMI LEIE
BUITICATION,
Apparatus for Treating and Assembling the Ingredients for the
Manufacture of Paving Compositions.
I, LIVINGSTON STAGG KASSON, of No. 771 Front Avenue, Buffalo, State of New
York, United States of America, Engineer, 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:-
This invention has for its object to reduce the expense incident to the necessity of
erecting various permanent plants for treating and mixing the ingredients of paving
compositions, and to this end, the invention consists of certain portable apparatus,
combining all the appliances necessary to the proper treatment and assembling of the
ingredients of paving compositions, which apparatus may be constructed in different
ways, but which consists essentially of two portable platforms carrying the apparatus
for heating the sand and asphalt, and for mixing the liquid materials, and a third
platform carried or supported by the other platforms or one of them in an elevated
position, and supporting the assembling or mixing apparatus.
In the construction and arrangement of apparatus illustrated in Figures 1 to 6, the
elevated platform is supported by and between both of the others. In this apparatus,
two of the platforms Z, Z₁ consist of flat or platform cars supported upon the usual
trucks, and the third platform P is carried in transportation by the platform Z¹, but
is extended therefrom and connected to the other car as shewn in Figures 1 and 3
when the apparatus is in use, thus permitting a cart Y to pass beneath the elevated
platform to receive the material discharged therefrom.
The platform P normally rests on the top of a hollow sand box R between two side
flanges 3, 3, but when the apparatus is in use, the platform P is slid outward, the two
cars are separated and the forward end of the platform P is bolted to the opposite car
at 4. The platform P supports the concrete mixer K and a frame supporting the
trunnions of a swinging sand-bucket L, and the trunnions of a swinging asphalt
bucket I, so arranged that either bucket may be turned to dump its contents into the
mixer K. The platform P also supports a sand-elevator M, consisting of a frame 5
swinging about a shaft, 6, supported by brackets 7, carrying a chute 8 and with a chain
of buckets 9, by which sand is raised from the top of the sand box R to the chute 8.
During transportation the elevator is swung down to a horizontal position. The proper
proportions of sand and asphalt being received into the buckets L, I, the latter are then
turned to discharge the contents into the mixer K, where the ingredients are thoroughly
mixed, and from which they are discharged at the proper time into the cart below
without any intermediate handling.
The remaining parts of the apparatus, together with the operating engines are
carried in any suitable manner by the platforms Z, Z. For instance, the platform Z
carries the steam generator A, the melting tank or tanks G, in which is heated or
melted the asphalt, and the apparatus for supplying the tanks with material and
discharging it therefrom. Each tank has manhole covers h which may be bolted so
as to seal the tank air-tight, and a steam pipe i passes from the generator A to a

page_text: steam heating coil 17, Figure 5 arranged within each tank so as to heat by its contact
the asphalt which in the first instance is lifted by a crane N and dumped through the
man-hole. The heating of the asphalt is facilitated by forcing air through the body
of the melted material, as for instance by means of an air pump D forcing the air
through a perforated pipe 18, Figures 5 and 6, or else forcing the air into a
receiver C which communicates with the pipe 18. The air after passing downward
through the perforations z in nipples 31 on the pipe 18 passes up through the asphalt
to the top of the tank and by its pressure on the surface of the melted asphalt, forces
the latter through a pipe m Figure 3 and into the bucket I. A cock 19 regulates the
discharge and serves to open and close the pipe. The nipples 31 are detachable and
provided with angular heads for turning the same, and the end of the pipe 18 has a
screw cap 30. This permits the nipples and the pipe to be cleaned when they become
clogged.
It is generally desirable to combine one or more materials with the asphalt to temper
the same, as for instance the residuum of coal oil. To effect this, there is provided a
tank F for containing such material and a pump E for pumping the same through a
pipe 20, from the tank F to the tanks G.
The platform 7 carries the sand and also the sand dryer V, which may be of any
suitable construction but as shewn is a revolving cylinder. A blast fan W serves to
drive air through the dryer V to aid in drying the sand, which when dry is delivered
into the bottom of the receiver 21, from which it is lifted by a chain elevator T and
delivered onto the platform at the top of the sand box R. The sand box R is hollow
and communicates with the steam pipe i, and is thus heated to maintain the sand
above the same in a heated condition. Any other ingredients may be mixed with the
sand upon the sand box. Suitable engines are arranged at different points to operate
the different appliances and are supplied with steam through the pipe i. Thus, an
engine H operates the mixer K, and the elevator M, and an engine U operates the
parts of the sand dryer, the blower W, and the elevator T.
While the platform P has been shewn as supported directly by the adjacent cars, it
will be evident that it may be supported between the ends of the cars in any suitable
manner. Thus in the construction shewn in Figures 7, 8 and 9, the platform P is
supported upon and wholly by one of the car platforms Z¹ and may be secured in a
position longitudinal with the platform Z' during transportation as shewn in Figure 9,
but may be turned at right angles as shewn in Figure 7, so that the end carrying the
mixer K extends beyond the side of the platform Z¹ to permit a cart to pass beneath
the mixer K. The platform P is pivotally supported in any suitable manner, as for
instance by means of a post a constituting part of a turntable.
The frame of each car consists preferably of metal beams suitably braced, supported
upon trucks C, C¹, but instead of being provided with a floor throughout its extent,
is open to permit the boiler or generator A, tanks G, and other parts to be set down
through the frame to reduce the height of the apparatus and permit passage through
tunnels. By setting down the generator A also, it is possible to extend above the top
of the same, the hinged or movable portion 6 of a sand heater V. The movable
portion is hinged at x to the fixed portion c, and when in use is swung to the vertical
position shewn in Figure 7. By thus constructing the sand heater, it may be made
of suitable height to permit the sand to flow downward by gravity, dispensing with
the propeller blades, screws, etc. or with rotating drums, which must be used when the
heater is horizontal. A blower or fan W operated by an engine H' communicates
through a pipe f with the fire box 6¹ of the generator so that a blast of air may be
blown through the generator and carry the products of combustion through a
discharge flue g¹ to the stationary portion c of the sand dryer, and thence upward in
contact with the sand. The engine H¹ also drives the shaft h¹ which drives the
elevator M for lifting the sand to the top of the dryer. The dry sand passes to the
ground from the bottom of the dryer and is raised by an elevator T, and is deposited
on a shelf n carried by the platform P and may thence be shoveled into the bucket L.
The liquid asphalt in the bottom of the tanks G is conducted by a vertical pipe 8
to a swinging horizontal pipe 9 having a cock at the end which may be swung to the
position, as shewn in Figure 7 to deliver the melted asphalt into the bucket I.

page_text: While the sand dryer in either form of apparatus described may have any suitable
internal construction, a preferable construction is illustrated in Figures 10 and 11 in
connection with a stationary form of dyer, but equally adapted to the dryer of the
portable apparatus.
In this form of dryer, the lower portion A contains the furnace grate 1 and ash
pit, with doors 2 which may be closed to prevent the escape of air, except upward to
the grate, and the outlet y of the combustion chamber communicates with the lower
end of the stack.
The stack has an inner wall 4, outer wall 5, and intermediate space divided by a
horizontal partition 6 into two chambers v, w, the former filled with refractory
non-conducting material, while the chamber w has an air inlet opening near the
top and communicates near the bottom with a pipe 8 leading to the inlet of a
blower W. From the outlet of the blower W, a pipe 9 extends to the ash pit.
Within the stack is pivoted a series of shelves, or plates 10, 12 arranged alternately
and inclined so that the sand falls from one to the other, and with each series of plates
is connected a chain 13 extending to a shaft 14 at the top of the stack, and which may
be turned to set the plates at any desired inclination. As the sand falls from plate to
plate, starting in a very wet condition, it is met by the heated products of combustion,
which being driven forcibly, break up and separate the masses of sand, and are brought
into intimate contact with all the particles securing a rapid evaporation. The air
chamber wat the bottom of the stack prevents it from rapidly burning away at this
part and secures the heating of the air supplied to the blower.
It will be evident that by means of the portable apparatus for heating and mixing
the ingredients required for a paving composition, it is possible to lay down pavements
of superior character in many small places where otherwise it would not be practic-
able to lay such pavements, inasmuch as it is not necessary to erect a permanent
apparatus at each place, but the portable apparatus described may be carried along
any ordinary road to the place where the operations are to be performed, and there
put into use, the materials being combined upon the elevated platform and being
delivered to the distributing parts directly therefrom without intermediate
manipulation.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that
what I claim is:-
1. A portable apparatus for preparing and combining material for asphalt pave-
ments, consisting of portable platforms supporting the generator, heating, and other
tanks and operating mechanism, and a third platform supporting the mixing apparatus,
substantially as described.
2. The combination in a portable apparatus for treating and mixing the ingredients
of asphalt paving composition, of two portable platforms carrying the heating
appliances and generator, and a third platform supported by one or both of the other
platforms in an elevated position to deliver the material to parts beneath and
supporting the mixing apparatus, substantially as set forth.
3. The combination of the portable platforms Z, Z³, and the elevated platform P
supported by one of the platforms Z, Z1, adapted to be extended between the same,
and supporting the mixing apparatus, substantially as set forth.
4. In a portable plant for preparing materials for street paving, a car provided with
tanks for receiving asphalt, a steam generator, and steam pipes for heating the asphalt,
an elevated platform carried by one of the cars, mixing apparatus thereon, and means
for delivering the melted asphalt from the tanks to the mixing apparatus,
substantially as set forth.
5. The combination of the car and melting tank, and air pipe 18 provided with
nipples and communicating with an air pump, substantially as set forth.
6. In a portable plant for preparing street paving material, the platforms Z, Z', one
carrying the melting tanks, the other, provided with a sand dryer, and an elevated
platform P supported on one or both of the platforms, provided with a mixing

page_text: apparatus, and means for conducting the asphalt and sand to the mixing apparatus,
substantially as set forth.
7. In an apparatus for preparing and mixing paving material, two platforms,
supporting the apparatus for preparing the different materials, and a third platform
supporting the mixing apparatus, and. pivotally supported by one of the other
platforms, substantially as set forth.
8. In a portable apparatus for treating paving material, cars provided with open
frames, with the apparatus for preparing the paving material supported in and
extending through the frames, substantially as described.
9. In a portable apparatus for preparing and mixing paving materials, a car provided
with a sand heater pivotally connected to be turned to a horizontal or to an
elevated position, substantially as set forth.
10. In apparatus for treating paving composition's a sand heater, either portable or
stationary, provided with alternating inclined plates or partitions, and means for
forcing heated products of combustion through the material falling from said
platforins or partitions, substantially as set forth.
11. The combination in a sand heater, of a stack, series of platforms, means for
altering the inclinations of the platforms, and means for forcing products of
combustion upward, substantially as set forth.
Dated this 12th day of April 1897.
For the Applicant,
PHILIP M. JUSTICE,
London, Chartered Patent Agent.