An- IMPROVED MACHINE FOR POLISHING METAL AND OTHER SURFACES
Year: 1870

page_text: LETTERS PATENT to George Haseltine, of the "International Patent
Office," Southampton Buildings, London, for the Invention of "An-
IMPROVED MACHINE FOR POLISHING METAL AND OTHER SURFACES." -A com-
munication from abroad by Peter Fitz Randolph, Augustus Knapp
Van Horne,, and Henry Vroom Voorhees, all of Illinois, United
States of America.
PROVISIONAL SPECIFICATION left by the said George Haseltine at
the Office of the Commissioners of Patents, with his Petition, on the
1st October 1870..
I, GEORGE HASELTINE, of the "International Patent Office," South-
ampton Buildings, London, do hereby declare the nature of the said
Invention for "AN IMPROVED MACHINE FOR POLISHING METAL AND OTHER
SURFACES," a communication, to be as follows:—
This Invention consists mainly in the combination of an endless belt
having a suitable polishing surface with a wheel or drum having an

page_text: elastic face or tire. It further consists in combining with the said
endless polishing belt an elastic belt which may be either attached
directly to the under surface of the polishing belt, or be permitted to
revolve beneath the polishing belt without direct attachment to it.
The said Invention is designed mainly for polishing irregular surfaces,
such as ploughshares, cultivator teeth, and the like. The ploughshare
or other article to be polished is pressed against the polishing belt over
the elastic wheel or belt, and as the latter confines itself to the shape of
the article pressed upon it, it follows that the surface, though irregular,
is as completely polished as if it were perfectly smooth and straight.
For very heavy work the elastic belt is secured to the under side of
the polishing belt. For work of a medium character I use the elastic
belt separate from the polishing belt; for lighter work I adopt an
arrangement wherein the wheel has an elastic tire combined with an
endless belt. By means of guide pulleys the length of the polishing
belt is largely increased without extending it beyond the limits of the
machine.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Haseltine in the Great Seal Patent Office
on the 1st March 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE.
HASELTINE, of the "International Patent Office," Southampton Buildings,
London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of October, in the year of
our Lord One thousand eight hundred and seventy, in the thirty-fourth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said George Haseltine, Her special licence that I,
the said George Haseltine, my executors, administrators, and assigns, or
such others as I, the said George Haseltine, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to
time and at all times thereafter during the term therein expressed, should
and lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "AN IMPROVED MACHINE FOR POLISHING METAL AND

page_text: OTHER SURFACES," a communication to me from abroad by Peter Fitz
Randolph, Augustus Knapp Van Horne, and Henry Vroom Voorhees,
all of Illinois, United States of America, upon the condition (amongst
others) that I, the said George Haseltine, my executors or administrators,
by an instrument in writing under my, or their, or one of their hands
and seals, should particularly describe and ascertain the nature of the
said Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said George Haseltine, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in
and by the following statement, reference being had to the accompanying
Drawing forming a part of this Specification:-
This Invention consists mainly in the combination of an endless belt
having a suitable polishing surface with a wheel or drum having an
elastic face or tire. It further consists in combining with the endless
polishing belt an elastic belt which may be either attached directly to
the under surface of the polishing belt or be permitted to revolve
beneath the polishing belt without direct attachment to it.

page_text: though irregular, is as perfectly polished as if it were perfectly smooth
and straight. The employment of the elastic belt secured to the under
side of the polishing belt, as shown in Figure 5, is especially designed
for very heavy work. The employment of the elastic belt separate from
the polishing belt, as shown in Figure 4, is designed for work of a
medium character, while the arrangement shown in Figure 2 may be
used for lighter work. By means of guide pulleys C, C, the length
of the polishing belt is largely increased without extending it beyond
the limits of the machine. X represents the foundation of the machine,
which may be of any desired form, and on which are located in suitable
bearings the driving wheel B, pulleys C, and grinding and polishing.
wheel A. The latter consists of the circular clamps A', A¹, that are
confined by the bolt A2 and the elastic tube a constructed of rubber
or other suitable material and inflated and air-tight. a¹ represents a
flat rim of similar material extending around the same. The rim a¹
may be merely a protuberance on the tube a, or attached after the
manner of an elastic tire; its object is to furnish a bearing surface for
the belt E. The tube a is provided on its inner circumference with the
projection a which is held between the clamps A¹ and confines the
hollow rim a firmly in place. The belt E is composed of duck or
leather covered with emery and passes over the wheel A, driving
wheel B, and pulley C; the latter by their arrangement admit of a
much greater length of belting than could otherwise be obtained
without extending the same beyond the limits of the machine. The
elastic belt b¹ may be constructed of any suitable yielding material,
rubber however being preferred; c, represents the polishing belt which
may be either attached directly to the outer surface of the elastic belt,
as shown in Figure 5, or be independent of it, as shown in Figure 4.
Power may be applied in any suitable manner, and any desired number
and arrangement of pulleys may be used, the faces of which may be
concave, convex, or of other desired form.
The operation of this Invention will be readily understood. The
surface to be ground or polished is pressed against the belt over the
elastic rim a of the wheel A (Figures 1, 2, and 3), which by reason of
its yielding nature allows all parts of the surface to come in contact
with the belt, it is therefore peculiarly adapted to grinding plough-
shares and other irregular surfaces. The operation in Figures 4 and 5 is
the same.

page_text: I do not limit myself to the precise construction of wheel shown, as
its form must necessarily be modified to suit the requirements of the
work for which the wheel is used.
In witness whereof, I, the said George Haseltine, have hereunto
set my hand and seal, this Fourth day of February, in the year
of our Lord One thousand eight hundred and seventy-one.
Witness,
E. C. JACKSON.
GEORGE HASELTINE. (L.S.)