Improvements in Polishing Blocks.
Year: 1896

page_text: Date of Application, 22nd May, 1896-Accepted, 22nd Aug., 1896
COMPLETE SPECIFICATION.
Improvements in Polishing Blocks.
1, HARRY LEOPOLD HAAS, a citizen of the United States of America, and by
occupation Treasurer of Zucker & Levett & Loeb Company, of 526 West
25th Street, in the City, County and State of New York, in the United States of
America, 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 relates to polishing compositions, to be used for preparing buff-
wheels, or polishing-buffs, or other devices, employed by polishing.
The distinctive novelty of the present improvement, in the art or manufacture,
consists in providing blocks or other shapes of the composition with an applied
coating composed of a moisture proof substance, preferably a grease.
The
Polishing compositions generally consist of tallow, stearine, or other greasy
material as a base, to which polishing materials, such as Tripoli, crocus, rouge
or other polishing powder, or a mixture of such powders, are added.
mixture is then poured or molded into forms of frames, and allowed to cool,
the most convenient shape for use being a stick, and applied to the polishing
or buffing device, preferably being held against the rapidly moving buffing-
wheel. Such compositions, as heretofore made, have been subject to rapid
deterioration, no adequate means having been provided for protecting them
against atmospheric influences. Especially has this been the case when lime, or
similar substance, has been contained in the composition, the moisture from the
air effecting a slaking of the lime and injuriously affecting the greasy substance,
rendering the block useless for polishing purposes. Attempts have been made
to lengthen the useful life of the polishing composition by encasing the blocks
in paper or metal envelopes, but such method has increased the cost of production
without fully attaining the desired result.
I have discovered that polishing blocks may be preserved for a long time if
provided with an applied and adhesive coating composed of a substance which will
exclude moisture from the polishing material.
In the accompanying drawing, Figs. 1 and 3 show two forms of polishing sticks,
and Figs. 2 and 4 are sectional views of such blocks.
In carrying out the invention, the operator takes a block or stick, A, composed
of a greasy substance intimately combined with one or more polishing substances.
Such block or stick is preferably shaped to conveniently fit the hand. He then
applies the coating B, in any of the well-known ways, by varnishing or dipping,
for instance. The thickness of the coating may be varied as desired.
Sticks or blocks coated as aforesaid may be transported or kept in stock for a
long time without losing their efficiency. This is especially true of blocks or
sticks which contain lime, or similar substance, injuriously affected by moisture.
The substance which is preferred for the coating is a comparatively stiff and
bard greasy material, such as paraffin. The use of a greasy material is especially
advantageous because it is capable of being melted by friction when held against
the buffing-wheel, and of mingling with the polishing materials, acting as a vehicle
for the same. It strengthens the block, and prevents chipping of the same.
additional advantage, also, is that less greasy material may be added to the core,
and the greasy material may be softer than the coating.
An

page_text: Having now particularly ascertained the nature of the invention, and in what
manner the same is to be performed, 1 declare that what I claim is :-
1. A polishing-block containing a polishing material and provided with ani
applied coating of moisture-proof substance, substantially as described.
2. A polishing-block containing a polishing material and provided with an
applied coating of stiff greasy substance, substantially as described.
3. A polishing-block containing lime and a greasy substance, in combination with
an applied coating of stiff greasy substance, substantially as described.
4. A polishing-block containing a polishing material and a soft greasy substance,
in combination with an applied coating of stiff greasy substance, substantially as
described.
1000
HARRY LEOPOLD HAAS.
Marks & Clerk,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.