IMPROVEMENTS IN MACHINERY. COMMONLY CALLED LOG FRAMES, FOR SAWING TIMBER
Year: 1861

page_text: LETTERS PATENT to John Robinson, of Rochdale, in the County of
Lancaster, Timber Merchant, for the Invention of "IMPROVEMENTS IN
MACHINERY. COMMONLY CALLED LOG FRAMES, FOR SAWING TIMBER."
PROVISIONAL SPECIFICATION left by the said John Robinson at the
Office of the Commissioners of Patents, with his Petition, on the
23rd February 1861.
I, JOHN ROBINSON, of Rochdale, in the County of Lancaster, Timber
Merchant, do hereby declare the nature of the said Invention for "IMPROVE
MENTS IN MACHINERY, COMMONLY CALLED LOG FRAMES, FOR SAWING TIMBER," to be
as follows:-
The object of my Invention is to construct a log frame which may be used
in forests or other situations in which there are no permanent buildings'for
fixing the machine, and to so arrange it that it may be moved from place to
place as required, I therefore combine the operating parts with a framing so
that they are complete in themselves, and capable of being moved bodily from
place to place upon their own wheels. The foundation plate of the machine
I construct so that it may be lowered to rest upon the ground, and to each
end of the main shaft I adapt a fly wheel; to either of which I connect the
driving strap.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Robinson in the Great Seal Patent Office on the
23rd August 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
ROBINSON, of Rochdale, in the County of Lancaster, Timber Merchant, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria by Her Letters
Patent, bearing date the Twenty-third day of February, One thousand
eight hundred and sixty-one, in the twenty-fourth year of Her reign, did,
for Herself, Her heirs and successors, give and grant unto me, the said
John Robinson, Her special license that I, the said. John Robinson, my
executors, administrators, and assigns, or such others as I, the said John
Robinson, 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 MACHINERY,
COMMONLY CALLED LOG FRAMES, FOR SAWING TIMBER," upon the condition, amongst
others, that I, the said John Robinson, by an instrument in writing under my
hand and seal, 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 Robinson, 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
(and accompanying Drawings (that is to say):-
My Invention relates to a machine which may readily be transported from
place to place, and may be used without the support of walls or other per-
manent erections. To this end I construct the operating parts and the framing
so that they constitute a machine complete in itself, provided with wheels for
the purpose of enabling it to be moved in its complete form. This machine
I provide with a foundation beam or plate which is capable of being lowered
so as to afford a solid bearing upon the ground, this may be done by sinking
the wheels. The main shaft I provide on each side with a fly wheel, either of
which I use for driving the machines instead of a pulley.
In the accompanying Drawing the framework of the machine is shewn at a,
one side of which is extended so as to carry a pair of wheels at b, mounted

page_text: upon an axle which is capable of locking, after the manner of ordinary car-
riages ; the other side of the framework carries another pair of wheels at c;
at d is the main shaft of the machine, upon each end of which is mounted a
fly wheel, one of which is shewn at e; these fly wheels I use instead of the
usual driving pullies, so that the machine may be driven at either side at
pleasure. The frame for carrying the saws is shewn at f, actuated by means
of the crank g and connecting rod h, in the usual manner. The feed apparatus
shewn in the Drawing is of that arrangement known as the silent motion,
consisting of a friction wheel i actuated by means of the clamp k, which is
caused to reciprocate by the excentric l and levers m. The carriages n and
pressure apparatus o are of the usual construction. The whole log frame
may be drawn upon the wheels, and when in the desired position the ground
may be removed so as to allow the wheels to descend until a solid bearing is
obtained by the part p of the framing bearing upon the ground. The machine
may then be put to work by driving it on the one side or the other, as most
convenient.
Having thus described and ascertained the nature of my said Invention,
and the manner in which the same is to be performed, I desire it to be under-
stood that I claim as secured to me under the above in part recited Letters
Patent,-
Firstly, constructing log frames so as to be capable of being moved complete
from place to place upon wheels provided for that purpose.
Secondly, as applied to such portable machines, the adaptation of a fly
wheel on either side for the purpose of driving the machine.
In witness whereof, I, the said John Robinson, have hereunto set my
hand and seal, this Twenty-second day of August, in the year of our
Lord One thousand eight hundred and sixty-one.
JOHN ROBINSON. (L.S.)