Pigments and other Comminuted. Pasty Substances.
Year: 1886

page_text: Pigments and other Comminuted. Pasty Substances.
:
"I ARTHUR BUEL of 4 Burling Slip in the City, County, and State of New-
York United States of America Manufacturer; 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 :—
My Invention relates to an apparatus designed more especially for drying white
lead and other pigments; or comminuted pasty substances, and the Invention
consists principally in depositing the substance to be dried in small cones or hillocks
upon a travelling belt or apron to which heat is applied so that the substance will
be dried in small homogeneous lumps or balls that can be handled without waste
and without filling the air with fine particles or fumes of the dried material. The
Invention also consists in the employment of a number of drying belts or aprons
arranged in vertical series so that the material will discharge from one belt to
the other while being dried; thus economizing space and heat; and the Invention
also consists in the special construction arrangement and combination of parts, all
as hereinafter described and claimed.
.
Reference is to be had to the accompanying drawings forming a part of this
Specification; in which figure-1 is a side elevation of a pigment drier made in
accordance with my Invention, with but one drying belt; figure 2 is a transverse
sectional elevation of the same taken on the line x-x of figure 1; and figure 3 is a
side elevation of a drier having several drying belts, and showing also a modified
arrangement of the hopper. Similar letters of reference indicate corresponding
parts in all the figures.
A represents an endless belt or apron placed upon the drums B B¹ one of which
may be revolved by hand or other power for causing the belt A to travel slowly.
The belt A is heated in this instance by hot air or steam supplied to the table or
chamber C through pipe D and the pigment or other material to be dried is supplied.
to the upper surface of the belt A in small cones or piles a. from the hopper E
which has a series of openings e made in its bottom and is given an up and down
motion for that purpose viz for thus depositing the material. In figures 1 and 2 -
071

page_text: the hopper E is held by the trunnions f in the slots g in the uprights F of the main
frame of the drier and is given a slow upward motion and a sudden drop. or
downward motion by means of the cams or tappets b on the main shaft B3 which
cams or tappets turn in contact with arms c attached to the hopper. In figure 3
while the hopper. is given an up and down motion the same as in figures 1 and 2,
the hopper is held in slots but is attached to central uprights F¹ of the main frame
by pivoted arms h which permit the hopper to be lifted by the cams or tappets so
that the hopper will drop by its own gravity at intervals to cause the material
in the hopper to be jarred through the openings e and deposited in small cones or
hillocks upon the apron A. The drop motion of the hopper may be accomplished
in various other ways, and in order to cause the material to be dropped in perfectly
formed cones the outlets e are made conical, as shown clearly in figure 2. In
figure 3 beneath the belt A is placed the endless belt A¹ and beneath the latter is
placed the belt. A². The belt A¹ is placed upon the drums G G¹, the belt A2 upon
the drums H H and the shaft of the drum B¹ at the top of the apparatus is geared
to the shaft of the drum G¹ and the shaft of drum G¹ is geared to the shaft of the
drum H¹ so that the belts all receive reverse motion from one and the same power
shaft. The belts A¹ A' are both heated the same, as the upper belt by a heating
chamber I placed within them The belt A will be of such length and will be
moved at such a rate of speed that the cones of wet material deposited upon it will
become set or hard enough to retain their shape before passing to the lower belt,
and for detaching the cones from the belt A, I provide at its outer end the scraper
and below the scraper I place the inclined board K for guiding the cones of partially
dried material as they drop from belt A to and upon the belt A'.. No scraper is
needed at the end of belt A¹ but an inclined board L like board' K is placed at
the end of this belt to guide the small balls of material as they drop from belt A¹
to the lower belt A. Where a single belt A is used as in figures 1 and 2, it must
be made of considerable length so that the material will become thoroughly dried
before reaching the drum B¹. 'I do not confine myself to any definite, number of
drying belts in the arrangement shown in figure 1. By depositing the pasty,
material in small cones or hillocks through the openings e by giving the hopper
a "drop" motion as described the material is subdivided into small quantities.so
that less heat is avoided in drying and the material being dried in such small cones
or balls there is no loss of material or annoyance from particles floating in the air
and the material as it leaves the drier is in convenient shape to handle.
J
Having now particularly described and ascertained the nature of the said
Invention; and in what manner the same is to be performed I declare that what
I claim is;
1. The method of drying pigments, etc, in small balls, cones, or hillocks;
substantially as described.,
2. A drop motion hopper having a series of holes in its bottom combined with
a travelling drying surface, substantially as described.
3. The hopper E having a series of conical holes formed in its bottom, substan-
tially as described.
4. In a drying apparatus, an endless drying belt and a hopper having holes in
its bottom combined with means substantially as described for lifting and dropping
the hopper for depositing the material to be dried in small cones or hillocks upon
the drying belt, substantially as and for the purposes set forth.
5: The endless travelling drying belt A placed upon drums adapted to be revolved
for moving the belt in combination with the hopper E pivoted arms h cams or
tappets b and arms c, the hopper being formed with the series of holes e substan-
tially as and for the purposes set forth.
6. In a drying apparatus, the hopper E having conical outlets in its bottom
combined with the travelling drying belt A and means substantially as described
for imparting a drop motion to the hopper as and for the purposes set forth..

page_text: 7. In a drying apparatus, the series of drying belts A. A¹ A' and the series of
drums arranged for moving the belts in reverse directions in combination with the
hopper E having holes e and means substantially for giving the hopper a drop
motion as and for the purposes set forth.
8. In a drying apparatus, the series of drying belts A A¹ A* placed one above
the other on drums arranged at opposite ends of the main frame and adapted to
move the belts in reverse direction in combination with the hinged hopper E
shaft B' cam b and projections on the hopper for giving the latter a drop motion.
Dated this 15th dov of June 1886.