IMPROVEMENTS IN LEATHER DRESSING MACHINES
Year: 1874

page_text: LETTERS PATENT to William Morgan-Brown, of the Firm of Brandon
and Morgan-Brown, Engineers, and Patent Agents, of 38, 'South-
ampton Buildings, London, and 13, Rue Gaillon, Paris, for the
Invention of "IMPROVEMENTS IN LEATHER DRESSING MACHINES."―A
communication from abroad by James Moore Caller, of Salem,
Essex County, Massachusetts, United States of America.
Sealed the 9th October 1874, and dated the 15th April 1874.
PROVISIONAL SPECIFICATION left by the said William Morgan-
Brown at the Office of the Commissioners of Patents, with his
Petition, on the 15th April 1874.
I, WILLIAM MORGAN-BROWN, of the Firm of Brandon and Morgan-
5 Brown, Engineers and Patent Agents, of 38, Southampton Buildings,
London, and 13, Rue Gaillon, Paris, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN LEATHER DRESSING MACHINES,"
be as follows:-
This Invention for improvements in leather dressing machines relates
to an organization of mechanism for using a rotary working tool having

page_text: flanges, and the opposite ends of each holder passing directly under
said flanges.
One part of the Invention consists in the working tool having re-
movable blades thus confined, any blade being liberated by starting back
the screw cap.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Morgan-Brown in the Great Seal Patent
Office on the 13th October 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
MORGAN-BROWN, of the Firm of Brandon and Morgan-Brown, Engineers
and Patent Agents, of 38, Southampton Buildings, London, and 13, Rue
Gaillon, Paris, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of April, in the
year of our Lord One thousand eight hundred and seventy-four, in
the thirty-seventh year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said William Morgan-Brown,
Her special license that I, the said William Morgan-Brown, my
executors, administrators, and assigns, or such others as I, tho said
William Morgan-Brown, 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 "IMPROVEMENTS IN LEATHER DRESSING
MACHINES," (a communication to me from abroad by James Moore
Caller, of Salem, Essex County, Massachusetts, United States of
America, upon the condition (amongst others) that I, the said
William Morgan-Brown, my executors or administrators, by an in-
strument in writing under my, or their, or one of their hands and
scals, 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.

page_text: NOW KNOW YE, that the said William Morgan-Brown, 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 thereof (that is to say):
The Invention relates to an organization of mechanism for using a
rotary working tool, having both a traverse motion over the bed and a
positive rotative movement during its contact with the skin or leather
placed upon the bed, and in a direction opposite to that which it would
receive by mere contact with the bed.
In carrying out the Invention the tool stock is preferably hung from
two slides, reciprocating upon two stationary rods or rails fixed to over-
hanging arms extending from the main frame, and the stock is fixed to
one end of a long link, the opposite end of which is jointed to crank
pins extending from crank wheels on driving shafts. Twin crank wheels
and shafts are preferably employed, but a single wheel and shaft may
be used. The link extends from the upper part of the stock, the latter
being a right angular extension from the link or approximating thereto,
and during the upper half rotation of the crank pins the link is kept at
such an angle as to hold the tool entirely above or out of contact with
the bed or the work placed thereon, the tool while thus above the work
traversing over the bed from the inner to the outer end thereof, while
during the other half rotation of the bed the link is at such an angle as
to carry the tool into contact with the bed or work, and hold it there
during the movement of the tool from the outer to the inner end of the
bed, the tool stock in these movements sliding upon the guide rods or
rails. The stock is jointed to the slides running upon said rails, and the
roll journalled in said stock has its positive rotative movements imparted
to it by suitable connections with the driving shaft or shafts.
One part of the Invention consists in the organization thus generally
described.
The Drawing represents a machine embodying the Invention.
Figure 1 shows the machine in plan; Figure 2 is a sectional clevation
of it; Figure 3 is a side elevation of it.
Figures 4, 5, 6, and 7, show the working tool and details thereof;
Figure 8 is a sectional view of the licad (enlarged); Figure 9 is a front
view.

page_text: In Figures 1, 2, and 3, a denotes the frame having overhanging
arms b, bencath which are fixed the horizontal rods or rails c, upon
which travel the slides d, the tool stock e being jointed to these slides,
and reciprocating over the bed f. The tool stock is fixed to or extends
from one end of a link g whose opposite end is jointed to a crank pin or
shaft connecting two crank wheels i, k, on twin driving shafts l, m,
the rotation of either or both of said driving shafts imparting recipro-
cating movement to the tool stock, to carry the tool in one direction
over, and clear from the bed, and in the opposite direction in contact
with the bed. At the bottom of the tool stock are bearings n in which
are journalled the gudgeons of the working tool or cylinder p, and
to this tool rotative movements are imparted as follows:-The tool shaft
carries pulleys q connected by belts with pulleys & on the pivot shaft,
and this shaft carries a pulley t connected by a belt u with a pulley v
on the crank pin ; on the opposite ends of the pin h are pulleys w
against which are held belts that extend around stationary drums y
and pulleys, which pulleys are friction pulleys and turn upon pins
extending from cars a² projecting from the crank wheels, the pulleys w
and being so placed that the pulleys are binders holding the belts x
in contact with the pulleys wo. As the driving shaft and crank wheels
rotate rotation is imparted to the pulleys wo through the frictional
contact therewith of the belts x, and this rotation of the pulleys w is
communicated through the respective shafts and pulleys to the tool
shaft and its tool. Parallel to the tool shaft is seen the shaft carrying a
reciprocating grinder wheel or lap c².
น
By means of the slide d the working surface of the tool moves in a
plane substantially parallel with the horizontal top of the bed. Tho
bed is jointed to the top of a vertical spindle d extending through a
stand e² and resting upon an arm f2 extending from a shaft g², upon
which shaft is a piece 2 having an arm upon which rests a projection
from a foot lever ² jointed loosely to the end of the shaft g. Depres-
sion of this lever turns the shaft g* and raises the spindle d² and the bed.
Fixed on the spindle d is a plate & through the opposite ends of which
extend screws m², said screws being fastened to the bed and resting
upon arms of levers n², the opposite arms of which are weighted so that
the bed becomes a yielding bed held up by the weighted levers and
yielding against the upward stress exerted by these weights. To limit
the extent of rise and fall of the bed adjustable pins o² are connected

page_text: with the piece ³, these pins bringing up against a stop p as the foot
lever is depressed or released. To counterbalance the weight of the
pulley appendage applied to the crank wheels i, k, the opposite sides of
such wheels are weighted preferably by increasing the thickness of
the castings as seen at q².
Where the plates are made as integral parts of the cylinder or working
tool or are not separately moveable, it is very difficult if not more impos-
sible to repair the tool in case of breakage of either blade; and in
Figures 4, 5, 6, and 7, a construction is shown to remedy this difficulty.
The tool being a solid cylinder I have arranged round its peripheral
surface a series of holders with ends parallel to the cylinder ends, and
with spiral shaped sides or edges, the cutter blade fitting between and
being held by the edges of adjacent plates, and the holders and blades
being confined to the cylinder by the cylinder heads, each of which is
fixed and made with a flange or as a flanged screw cap, screwing up to
the adjacent end of the cylinder. By these flanges the opposite end of
the head, the blades and holders are confined, each blade having two
projections extending under the opposite flanges, and the opposite ends
of each holder passing directly under said flanges.
One part of the Invention consists in the working tool having re-
movable blades thus confined, any blade being liberated by starting back
the screw cap.
°
The construction of the cylinder is shewn in Figures 4, 5, 6, and 7,
in which Figures a denotes the shaft; 6 the cylinder or head fixed to
or forming part of the shaft; c, d, denote two caps at opposite ends of
the cylinder or head b. One of said caps may be fixed to or form part
of the cylinder, but it is preferable to make each moveable, forming it
with a nut thread working on a screw thread to screw it up to or away
from the cylinder. Each cap is made with an inwardly projecting
flange g, which when the cap is in place forms an annular groove at
each end of the cylinder. Upon the cylinder are placed a series of con-
cave holder plates, fitting to the curved surface of the cylinder and having
parallel ends extending under the flanges and spiral parallel edges,
these plates being such in number as to receive between their respective
adjacent edges the several working blades Z, the inner edges of cach of
which fit to the cylinder and are confined between the holder plates
while their outer working edges extend from the cylinder as seen in the
I

page_text: Drawing. Each blade has at its opposite ends projections i which
extend into the annular grooves formed by the flanges g.
When the holders and blades are in place the screw caps bind
them all together and hold them securely, and by loosening either cap
any blade may be dislodged for repairs or replacement by another.
Or all of the holders and blades may be removed to be replaced by others
set at different angles, or nearer together or farther apart.
Having now described and particularly set forth the nature of the said
Invention and the manner of carrying the same into effect, I would
have it understood that what I claim is, the general organization of the
machine, and the specific construction and arrangement of the various
parts thereof, substantially as shewn and described.
In witness whereof, I, the said William Morgan-Brown, have
hercunto set my hand and seal, this Thirteenth day of October, in
the year of our Lord One thousand eight hundred and seventy-
four.
WILLIAM MORGAN-BROWN. (L.S.)