IMPROVEMENTS IN APPARATUS OR APPLIANCES FOR RENDERING Å SAWARES AD SHE DEATHEDING
Year: 1874

page_text: LETTERS PATENT to John Parkinson, of Liverpool, in the County of
Lancaster, Weighing Machine Maker, Hugh Morgan, of the same
Place, Iron Turner, and Peter Eadington, of Lancaster, in the
County of the same Name, Weighing Machine Maker, for the
Invention of "IMPROVEMENTS IN APPARATUS OR APPLIANCES FOR RENDERING
Å SAWARES AD SHE DEATHEDING "
Sealed the 21st May 1875, and dated the 1st December 1874.
PROVISIONAL SPECIFICATION left by the said John Parkinson, Hugh
Morgan, and Peter Eadington at the Office of the Commissioners
of Patents, with their Petition, on the 1st December 1874.
We, JOHN PARKINSON, of Liverpool, in the County of Lancaster,
Weighing Machine Maker, HUGH MORGAN, of the same Place, Iron
Turner, and PETER EADINGTON, of Lancaster, in the County of the same
Name, Weighing Machine Maker, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN APPARATUS OR APPLIANCES FOR RENDERING

page_text: "
LEVER WEIGHING MACHINES AUTOMATIC OR SELF-REGISTERING,' to be as
follows:
The object of this Invention is to prevent excessive vibration of the
index finger in weighing machines, when a counterpoise suspended in
liquid is used instead of adjustable weights, such improvements being
specially adapted to steelyards, and consists,―
First. In overcoming excessive vibration of the counterpoise and
consequently of the index finger in making the counterpoise hollow, open
to the liquid at the bottom, and provided with one or more air holes at
top, the size and number of such air holes being adjustable or not as
desired, or an air pipe or pipes may pass upwards through the liquid
in the containing tank or vessel which may be annular or of other
form.
Second. As alternative additional means for reducing vibration in
partially closing the opening at the bottom of a hollow counterpoise by
wire gauze or perforated material.
Third. As means for diminishing vibration when a solid counterpoise
is used in making use of a flange, cast or secured laterally around the
bottom of such counterpoise.
Fourth. As alternative or additional means of diminishing vibration
when a solid or hollow counterpoise is used in employing a double
vessel, one to contain the counterpoise and the other to contain a float
attached to the index.
By adjusting the size of the opening or openings between the two
vessels any required degree of sensibility can be obtained. It will also
be obvious that the float containing vessel might be removed to a
distance from the machine.
The form and construction of the hollow counterpoise may be varied..
The index may be operated from the lever or counterpoise, or, as under
the fourth head, from the float.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Parkinson, Hugh Morgan, and Peter
Eadington in the Great Seal Patent Office on the 1st June
1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
PARKINSON, of Liverpool, in the County of Lancaster, Weighing
Machine Maker, HUGH MORGAN, of the same Place, Iron Turner, and
PETER EADINGTON, of Lancaster, in the County of the same Name,
Weighing Machine Maker, send greeting.
.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of December, in the
year of our Lord One thousand eight hundred and seventy-four, in
the thirty-eighth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto us, the said John Parkinson, Hugh
Morgan, and Peter Eadington, Her special licence that we, the said
Jolin Parkinson, Hugh Morgan, and Peter Eadington, our executors,
administrators, and assigns, or such others as we, the said John
Parkinson, Hugh Morgan, and Peter Eadington, our 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 "IMPROVEMENTS
IN APPARATUS OR APPLIANCES FOR RENDERING LEVER WEIGHING MACHINES
AUTOMATIC OR SELF-REGISTERING,' upon the condition (amongst others)
that we, the said John Parkinson, Hugh Morgan, and Peter Eadington,
our executors or administrators, by an instrument in writing under our,
or their, or one of their or our 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 Scal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
"
NOW KNOW YE, that we, the said John Parkinson, Hugh Morgan,
and Peter Eadington, do hereby declare the nature of our 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

page_text: being had to the accompanying Sheet of illustrative Drawings, and to
the figures and letters marked thereon, that is to say :—
The object of this Invention is to prevent excessive vibration of the
index finger in weighing machines, when a counterpoise suspended in
liquid is used instead of adjustable weights, such improvements being
specially adapted to steelyards, and consists,-
First. In overcoming excessive vibration of the counterpoise and
consequently of the index finger in making the counterpoise hollow, open
to the liquid at the bottom, and provided with one or more air holes at
top, the size and number of such air holes being adjustable or not as
desired, or an air pipe or pipes may pass upwards through the liquid
in the containing tank or vessel which may be annular or of other
form.
Second. As alternative additional means for reducing vibration in
partially closing the opening at the bottom of a hollow counterpoise by
wire gauze or perforated material.
Third. As means for diminishing vibration when a solid counterpoise
is used in making use of a flange cast or secured laterally around the
bottom of such counterpoise.
Fourth. As alternative or additional means of diminishing vibration
when a solid or hollow counterpoise is used in employing a double
vessel, one to contain the counterpoise and the other to contain a float
attached to the index.
By adjusting the size of the opening or openings between the two
vessels any required degree of sensibility can be obtained. It will also
be obvious that the float containing vessel might be removed to a
distance from the machino.
The form and construction of the hollow counterpoise may be varied.
The index may be operated from the lever or counterpoise, or as under
the fourth head from a float.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a view illustrative of the first and second parts of our Inven-
tion. a, weighing platform; b, knife edges; c, lever; d, hollow
counterpoise attached to f and working in the liquid container e. In
this modification excessive vibration is prevented by the adjustment of

page_text: i, dial; j, finger operated by the finger and weighted cord k. The
finger makes two revolutions in weighing up to twenty tons. In the
above modification the counterpoise d is provided with a space which
can be filled more or less with liquid or other matter to adjust the
weight of d.
Fig. 2 is a view illustrative of the first part of our Invention.
m, hollow counterpoise closed at top and open at bottom; n, container
o, air pipe admitting air to the interior of m so as to adjust the speed of
its rise and fall.
Figs. 3 and 4 are illustrative of the fourth part of our Invention.
Here a double vessel is used; one part p containing a counterpoise q;
the other part », a float s. The dial is operated from 8.
Fig. 5 is also illustrative of the fourth part of our Invention. Here
the float compartments is removed to a distance from the counterpoise
compartment as represented by e, Fig. 1.
Fig. 6 is illustrative of the third part of our Invention. Here a
flange t is employed to destroy excessive vibration. In this machine the
counterpoise is only used to register the finer divisions up to two hundred-
weight. The larger amounts being obtained by the weights u, as shown.
The hollow float shown in Fig. 1 is used in preference to the flanged
counterpoise in this modification.
It will be obvious that the arrangement of levers and parts may be
varied without departing from our Invention.
Having now fully described and particularized our Invention, we
claim,―
Under the first part (a) the use in combination with a hollow
counterpoise of air holes at top. (6), the use in combination with a
hollow counterpoise of air pipes, substantially as described and
illustrated.
Under the second part covering the opening at the bottom of a
hollow counterpoise with wire gauze or perforated material, substantially
as and for the purposes described.
Under the third part the use of a flange t, substantially as and for
the purposes set forth.

page_text: Under the fourth part the use of a double vessel in combination
with a float and hollow counterpoise, substantially as and for the purposes
set forth.
In witness whereof, we, the said John Parkinson and Hugh
Morgan, for ourselves and the said Peter Eadington, have here- 5
unto set our hands and seals, the Thirty-first day of May, in the
year of our Lord One thousand eight hundred and seventy-
five.
In the presence of
J. T. KING,
Patent Agent,
Liverpool.
JOHN PARKINSON. (L.s.)
HUGH MORGAN.
(L.S.)