IMPROVEMENTS IN APPARATUS USED IN ROLLING LEATHER
Year: 1865

page_text: LETTERS PATENT to John Henry Tyler, of Bermondsey, in the County of
Surrey, Engineer, for the Invention of "IMPROVEMENTS IN APPARATUS
USED IN ROLLING LEATHER."
Sealed the 26th January 1866, and dated the 2nd August 1865.
PROVISIONAL SPECIFICATION left by the said John Henry Tyler at the
Office of the Commissioners of Patents, with his Petition, on the 2nd.
August 1865.
I, JOHN HENRY TYLER, of Bermondsey, in the County of Surrey, Engineer,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
APPARATUS USED IN ROLLING LEATHER," to be as follows:-
The above machine consists of an ordinary gun metal roller and weighted
box, as used in rolling leather, to which I attach a rack by a universal joint,
which rack is actuated by a pinion (either wood or iron gear) keyed on the
shaft between two frames of the required height, and which pinion is driven
either with two pairs of fast and loose strap pullies on the same shaft, which
are thrown in and out of gear by a suitable clutch or clutches as herein-after
mentioned, or two single strap pullies may be used, with friction clutches or
clutches of any other description, or by means of bevil gear instead of pullies
with clutches attached in the same manner, and driven by a corresponding.

page_text: wheel on a driving shaft in either a horizontal or perpendicular direction.
The clutches are thrown in and out of gear by tappets. in the rack taking
effect on arms attached to a second or oscillating shaft between the frames
before mentioned, and to which shaft is fixed a coarse screw, on which is
fitted a clutch arm. This screw by the oscillations of the shaft imparts a
to-and-fro motion to the clutch arm, resulting from the action of the tappets.
attached to each end of the rack, which may be altered to any distance to
suit the required length of stroke. The clutches are held in gear by means
of a weighted overbalancing lever attached to the oscillating shaft; the rack
also passes over two flanged runners to guide, it under the pinion before
mentioned. The roller box has two runners attached to the top, running
on a rail, which serves to keep the box a trifle off the bed if required, and to
this may be
prevent it slamming when it runs off the ends of the leather;
adjusted to any required height by means of the set screws at each end of the
rail, which rail also serves as a guide to keep the roller in the centre of the
bed. The roller bed is a kind of bench on strong supports, and above the
usual height, with a single strip of zinc a little wider than the roller screwed
down in the centre, the hide being passed over the bench and under the roller
by the man working it. A small handle is attached to the under shaft for
throwing the machine in and out of gear. The machine is driven by steam
or other suitable power, transmitted through a driving shaft to the fast and
loose pullies before described, the effect being to produce a self-acting
alternating motion of the weighted box and roller by which the leather is
rolled
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Henry Tyler in the Great Seal Patent Office on the
2nd February 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HENRY TYLER, of Bermondsey, in the County of Surrey, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of August, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-ninth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said John Henry Tyler, Her special licence that I, the said John Henry Tyler,.
y executors, administrators, and assigns,, or such others as I; the said
!

page_text: John Henry Tyler, 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
APPARATUS USED IN ROLLING LEATHER," upon the condition (amongst others) that I;
the said John Henry Tyler, 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 John Henry Tyler, do hereby declare
the nature of my 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 Sheet of Drawings hereunto anuexed,
and to the letters and figures marked thereon (that is to say):
"
My Invention relates to improvements in actuating the ordinary gun metal
roller and weighted box used in rolling leather; for this purpose I attach a
rack by a universal joint or otherwise, which rack is actuated by a pinion
keyed on a shaft mounted between two frames of the required height, and
which pinion is driven with two pairs of fast and loose strap pullies on the
same shaft, which are thrown in and out of gear by a suitable clutch or
clutches as herein-after mentioned, or the two single strap pullies may be
used with friction clutches or clutches of any other description; or the
machine may be driven by means of bevil gear instead of pullies with clutches
of communication in the same manner, and driven by a corresponding wheel
on a driving shaft in either a horizontal, or perpendicular, or other direction;
the clutches are thrown in and out of gear by tappets on the rack taking
effect on the arms attached to a second or oscillating shaft between the frames
before mentioned, and to which shaft is fixed a coarse screw, on which is
fitted a clutch arm; this screw by the oscillation of the shaft imparts &
to-and-fro motion to the clutch arm, resulting from the action of the tappets
attached to each end of the rack, which may be altered to any distance to
suit the required length of stroke. The clutches are held in gear by means
of a weighted or overbalancing lever attached to the oscillating shaft ; the
rack also passes over two flanged runners to guide it under the pinion before
mentioned. The roller box has two runners attached at the top, running on
a rail, which serves to keep the box a trifle off the bed if required, and to

page_text: prevent it slamming when it runs off the ends of the leather; this may be
adjusted to any required height by means of a set screw or screws. The rail
also serves as a guide to keep the roller in the centre of the bed..
Instead of the above another arrangement may be adopted, as shown in the
Drawing annexed. The roller bed is a kind of, bench on strong supports, and
about the usual height, with a single strip of zinc a little wider than the
roller screwed down in the centre, the hide being passed over the bench and
under the roller by the operator. The small handle attached to the under
shaft is for throwing the machine in and out of gear. The machine is driven
by steam or any suitable power transmitted through the driving shaft to the
fast and loose pullies before described, the effect being to produce a self-acting
alternating motion of the weighted box and roller by which the leather is
olled

page_text: ball-and-socket joint, free also to allow the weighted box I to slide up and
down on the end of the bar, and still maintain its connection, or it may simply
be a dovetailed slot, in which the dovetailed end of the rack M takes. A
pinion P gears with the rack M, which pinion is fixed on shaft R, mounted
in bearings supported by standards S, S. On shaft R are fitted loosely two
riggers or pulleys T, T, having between them a double clutch.f, which clutch
is free to slide on the shaft R, but rotates with it; this clutch f can be thrown
into gear with one rigger T, or the other T, and is so operated by the machine
as will be herein-after described. The riggers receive motion from a first
mover actuated by steam or any suitable power, the one rigger receiving
motion in a contrary direction to that of the other, which may be simply
effected by crossing one of the straps as represented in the Drawings. Imme-
diately below the shaft R is an oscillating shaft U, also mounted in bearings
in the standards S, S. On this shaft U is fixed an arm g, rising up so as
to be interposed between the two tappets e, e. On same shaft. U is formed a
quick-threaded screw h (say 4-threaded), this fits into a nut mounted in
swivel bearings in a loop of the lever. W. (separately represented at Fig. 8)
pivotted on a fulcrum at i, and having at the upper end a fork 1, l, with
prongs and rollers m, m, taking into the circular groove p around the double
clutch f. On shaft U is also mounted a counterbalancing weighted lever X,
which is thrown over the shaft U and preponderates alternately on the one
side and on the other, such preponderance taking effect so as to keep the
clutch in gear with the rigger desired. According to the rigger with which
the clutch is in gear so will the direction of rotation communicated to the
shaft R be, and as a consequence the direction of motion given to the rack M.
The operation of the machine is as follows:-Motion being given to the
riggers T, T, in opposite directions as described will be transmitted by one
of them to shaft R, pinion P, and rack M; the latter will move in a longitu-
dinal direction until one of the tappets e, e, comes in contact with the arm g,
when the shaft U will be caused to oscillate, thereby carrying over the centre
or axis the overbalancing lever X, and at same time moving the clutch lever
by the screw h causing the clutch f to transfer its hold from one rigger to the
other, when the motion of the shaft R and rack M will be immediately
reversed. The same result will occur when the rack bar has moved sufficiently
in the opposite direction to effect contact of the other tappet with the arm g,
when the direction of motion will be again reversed, and so on alternately
backwards and forwards. The tappets e, e', are fitted into a dovetailed slot
in the under side of the rack M, in which they can be slid and adjusted, and
fixed so as to take up different positions and distances from each other.. By

page_text: varying the distance between the tappets the rack M, and consequently
the weighted roller will be caused to make a longer or shorter stroke,
which will be adjusted according to the length of surface of the leather to be
rolled.
By this apparatus it will be evident that from a continuous rotary motion
a reciprocating motion is transmitted to the weighted roller, the extent of
which can be readily adjusted to suit the purpose desired. Instead of straps
and riggers toothed gearing may of course be submitted, and other mechanical
equivalents adopted in lieu of other parts without departing from my Invention.
Having described the nature of my Invention, and the manner of per-
forming the same, I declare that what I claim as my Invention to be protected
by the herein-before in part recited Letters Patent is, the construction and
arrangement of apparatus represented in the Drawings annexed, and herein-
before described for communicating motion to the weighted roller for
'rolling leather in the manner and with the objects in view herein-before set
forth.
In witness whereof, I, the said John Henry Tyler, have hereunto set my
hand and seal, this First day of February, in the year of our Lord
One thousand eight hundred and sixty-six.
Witness,
W.. CLARK,
Patent Agent,
53, Chancery Lane,
London.
.
JOHN HENRY TYLER.. (L.s.)