IMPROVEMENTS IN THE MEANS OR APPARATUS FOR TRANSMITTING, REGULATING, AND STOPPING THE MOTION OF SAW FRAMES AND OTHER MACHINERY
Year: 1874

page_text: LETTERS PATENT to John Taffinder, of Leeds, in the County of York,
Maximilian Wilson, of Northampton, in the County of Northamp-
tonshire, and David Hall, of Leeds, in the County of York, for
the Invention of "IMPROVEMENTS IN THE MEANS OR APPARATUS FOR
TRANSMITTING, REGULATING, AND STOPPING THE MOTION OF SAW FRAMES
AND OTHER MACHINERY."
Sealed the 11th May 1875, and dated the 18th November 1874.
PROVISIONAL SPECIFICATION left by the said John Taffinder,
Maximilian Wilson, and David Hall at the Office of the Com-
missioners of Patents, with their Petition, on the 18th November
1874.
We, JOHN TAFFINDER, of Leeds, in the County of York, MAXIMILIAN
WILSON, of Northampton, in the County of Northamptonshire, and
DAVID HALL, of Leeds, in the County of York, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN THE MEANS OR
APPARATUS FOR TRANSMITTING, REGULATING, AND STOPPING THE MOTION OF SAW
FRAMES, AND OTHER MACHINERY," to be as follows:-
Our Invention is particularly applicable to saw frames, but may also
be employed for transmitting, regulating, and stopping the movement

page_text: of machinery to which motion has hitherto been imparted or transmitted
direct from a crank, eccentric, or cam.
Our Invention provides a ready means of regulating and stopping the
stroke of saw frames and other machinery having a similar reciprocating
motion, and is as hereafter described.
Instead of having a simple connecting rod between the crank,
eccentric, or cam, and the machine to be put in motion, we provide
between the two, and mounted in suitable bearings, a radial arm or link,
to which an oscillating movement is transmitted from the crank,
eccentric, or cam, by means of a connecting rod. The radial arm or
link is provided with a slot hole of suitable length, in which is fitted, so
as to slide freely, a slide block which may be adjusted or moved to any
required position in the slot hole by means of a regulating screw or its
equivalent. To this slide block we attach the saw frame or other
machine by means of a suitable connecting rod. The slot in the arm or
link may be straight or curved. By this arrangement the stroke of the
machine can be varied at any moment; also by lowering the centre of
the slide block with the connecting rod attached thereto down to the
centre of the axis on which the radial arm or link oscillates, the move-
ment of the machine can be stopped. This arrangement will be found
particularly useful to saw frames and other machines placed side by side
and driven from cranks, eccentrics, or cams mounted on one or the same
shaft.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Taffinder, Maximilian Wilson, and David
Hall in the Great Seal Patent Office on the 13th May 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
TAFFINDER, of Leeds, in the County of York, MAXIMILIAN WILSON, of
Northampton, in the County of Northamptonshire, and DAVID HALL,
of Leeds, in the County of York, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of November, 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

page_text: successors, give and grant unto us, the said John Taffinder, Maximilian.
Wilson, and David Hall, Her special licence that we, the said John
Taffinder, Maximilian Wilson, and David Hall, our executors, admi-
nistrators, and assigns, or such others as we, the said John Taffinder,.
Maximilian Wilson, and David Hall, 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 THE MEANS OR.
APPARATUS FOR TRANSMITTING, REGULATING, AND STOPPING THE MOTION OF SAW:
FRAMES. AND OTHER MACHINERY," upon the condition (amongst others)
that we, the said John Taffinder, Maximilian Wilson, and David Hall,.
our executors or administrators, by an instrument in writing under
our, or one of our, 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 we, the said John Taffinder, Maximilian
Wilson, and David Hall, 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 state-
ment, reference being had to the accompanying Drawings, and to the
letters of reference marked thereon, that is to say :-
Our Invention is particularly applicable to saw frames, but may also
be employed for transmitting, regulating, and stopping the movement of
machinery to which motion has hitherto been imparted or transmitted
direct from a crank, eccentric, or cam.
Our Invention provides a ready means of regulating and stopping the
stroke of saw frames and other machinery having a similar reciprocating
motion, and is as hereafter described.
.
Instead of having a simple connecting rod between a crank, eccentric,
or cam, and the machine to be put in motion, we provide between the
two, and mounted in suitable bearings, a radial arm or link, to which an
oscillating movement is transmitted from the crank, eccentric, or cam

page_text: by means of a connecting rod. The radial arm or link is provided with
a slot hole of suitable length, in which is fitted, so as to slide freely, a
slide block, which may be adjusted or moved to any required position in
the slot hole by means of a regulating screw, or its equivalent. To this
slide block we attach the saw frame or other machine by means of a
suitable connecting rod. The slot in the arm or link may be straight or
curved. By this arrangement the stroke of the machine can be varied
at any moment; also by lowering the centre of the slide block with the
connecting rod attached thereto down to the centre of the axis on which
the radial arm or link oscillates, the movement of the machine can be
stopped. This arrangement will be found particularly useful to saw
frames and other machines placed side by side and driven from cranks,
chaft
Between the cam, eccentric, or crank a and the machine, at b, which
is to be actuated thereby, we provide suitable bearings c for a radial arm
or link d, to which an oscillating movement is transmitted from the
cam, eccentric, or crank a by means of a connecting rod e. The radial
arm or link d is provided with a slot hole ƒ, in which is fitted, so as to
slide freely, a slide block 9, which may be adjusted or moved to any
required position in the slot hole ƒ by means of a regulating screw h, or
its equivalent. The screw / is turned by the attendant through the
hand wheel i. To the slide block g we connect the saw frame or other
machine, at 6, by means of a suitable connecting rod j. The connecting
rod jis attached to the slide block at k, as shewn. The slot hole fin
the radial arm or link d may be either straight or curved.
It is evident that the radial arm d may be so formed that the block g
may slide on it instead of along a slot formed in it. By this arrange-
ment the stroke of the machine, at b, can be varied at any moment, also
by lowering the slide block g with the connecting rod j attached thereto
down to the centre or axis on which the radial arm or link d oscillates,
the movement of the machine can be stopped.

page_text: If the movement is never to be altogether stopped, the centre or
axis may be straight instead of being cranked, as shown.
The herein-before described arrangement will be found particularly
applicable and useful for giving the required motion to saw frames and
other machines, and is also advantageous to machines placed side by
side and driven from cam, eccentrics, or cranks mounted on one or the
same driving shaft, the attendant being able to stop one or any number
of the machines independently of each other, and without interfering
with or stopping the movement of the driving shaft.
Having now described the nature of our said Invention, and illus-
trated by Drawings how the same may be carried into practice, we would
have it understood, that we do not confine ourselves to the precise
details; limits, or configúration of the various parts we have explained
and shewn, as the same may be varied or modified without in any way
departing from the nature of our said Invention; but what we do claim
and desire to be secured to us by Letters Patent is, the arrangement,
construction, and application of the radial arm or link and parts con-
nected therewith, substantially as hercin set forth for stopping and
regulating the stroke of saw frames and other machinery having a
reciprocating motion.
'
In witness whereof, I, the said David Hall, for myself and on
behalf of the said John Taffinder and Maximilan Wilson, have
hereunto set my hand and seal, this Twelfth day of May, in
the year of our Lord One thousand eight hundred and seventy-
five.