CERTAIN IMPROVEMENTS UPON SAWING MILLS OR MACHINES FOR SAWING ALL KINDS OF TIMBER
Year: 1805

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
SLATER, of Liverpool, in the County Palatine of Lancaster, Gentleman, send
greeting.
WHEREAS His most Excellent Majesty King George the Third did, by
His Letters Patent under the Great Seal of His United Kingdom, bearing date
at Westminster, the Second day of May, in the forty-fifth year of His reign, give
and grant unto me, the said John Slater, my exors, admors, and assigns, His
especial licence, that I, the said John Slater, my exors, adññors, and assigns,
should and lawfully might, during the term of years therein mentioned, make,
use, exercise, and vend, within England and Wales, and the Town of Berwick-
upon-Tweed, my Invention of "CERTAIN IMPROVEMENTS UPON SAWING MILLS OR
MACHINES FOR SAWING ALL KINDS OF TIMBER;" in which said Letters Patent there
is contained a proviso obliging me, the said John Slater, by an instrument
in writing under my hand and seal, to cause a particular description of the
nature of my said Invention, and in what manner the same is to be performed,
to be inrolled in His Majesty's High Court of Chancery within four calendar
months after the date of the said recited Letters Patent, as in and by the same,
relation being thereunto had, may more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
John Slater, do hereby declare that my said Invention is described and
ascertained in and by the above Drawings and description thereof.
In witness whereof, I, the said John Slater, have hereunto set my
hand and seal, this Twenty-eighth day of August, in the year of our
Lord One thousand eight hundred and five.

page_text: DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a saw frame in which the saws are fixed, which, being moved ver-
tically, saws the wood; A, the end of a beam, which is worked at the other
end by a crank; B, the connecting rod; C, the cross barr at the top of the
frame, to which is fixed the connecting rod B; D, D, two stays; E, E, the
top and bottom rails of the saw frame, in which the staples H, H, are held;
F, F, the two side pillars of the saw frame; G, G, cushions on which the
wedges rest that stretch the saws K; H, II, staples on which the buckles of
the saws I rest; I, six saws fixed; K, six saws fixed another way; L, L, L, L,
screws for adjusting the saws sideways, which I do not claim as any part of
this Invention; M, M, the buckles of the saws I; N, buckles of the saws K.
Fig. 2, a plan of the top or bottom rails E, E, Fig. 1; a, a, the groves in
which the staples II, II, and cushions G, G, Fig. 1, are fixed; b, b, the pillars
F, F, Fig. 1, of the saw frame. Fig. 3 and 4, plans of the buckles for the
saws I, Fig. 1. Fig. 5 represents two of the saws shewn at I, Fig. 1, showing
the manner in which the buckles slide into each other: A, B, the two saws;
C, the buckle of the saw A; D, the buckle at the bottom end of the saw A;
E, the buckle of the saw B; F, the buckle at the bottom end of the saw B.
The buckle C is made with a dovetail to slide into the grove of the buckle E;
the buckle D is made with a grove to receive the dovetailed buckle F. Fig.
6 and 7 represent the saws A, B, Fig. 5, separated. Fig. 8 and 9 represent
two of the saws shewn at K, Fig. 1. Fig. 8, A, the saw; B, the wedge for
tightening the saw; C, the top buckle; D, the cushions on which the wedges
tighten, shewn at G, Fig. 1; E, E, E, E, a section of the top rail E, Fig. 1;
F, the bottom buckle; G, G, G, G, a section of the bottom rail E, Fig. 1.
Fig. 9, the adjoining saw wedged at the bottom, and so on for each saw
alternately. Fig. 10 represents the six saws shewn at K, Fig. 1, taken out of
the frame; A, A, A, three top buckles, with mortices for the wedges, which
are tightened on the cushion G on the top rail E, Fig. 1; B, B, B, three
buckles, which rest upon the rebate G, G, Fig. 9; the bottom buckles are
fastened in the same manner to the bottom rail E, Fig. 1. Fig. 11, the end
view of one of the cushions G, shewn on the rails E, E, Fig. 1; A, that part
which goes into the
groves; B, the check of the cushion; the dot at C shews
one of the adjusting screws. Fig. 12 A, the saw; B, B, the cross section of
the cushions G, G, on the rails E, E, Fig. 1. Fig. 13: A, one of the upper
staple H, Fig. 1, screwed to the top rail E, Fig. 1, in which the buckles M,
Fig. 1, rest; C, C, adjusting screws, shewn at L, Fig. 1; D, D, D, screws by
which the saws are tightened, shewn at a, a, a, a, a, a, a, a, Figs. 5, 6, & 7 ;
E, E, E, the ends of three buckles, seen at E, Fig. 5.
Fig. 14, the same as

page_text: Fig. 13 reversed. Fig. 15: A, A, a plan of the staples A, A, Figs. 13 & 14;
b, b, b, b, b, b, plans of the buckles for six saws (in their staples), as shewn at I,
Fig. 1; the six dots in the staples A, A, shew the places where the screws pass
through the staples to tighten the saws shewn at D, D, D, D, D, D, Figs. 13
& 14. Fig. 16, a machine for preserving the position of the timber in the
carriage when sawing; A, A, two posts to which the top and bottom rails B, B,
are fastened; C, C, jointed sliders, to which are connected the rollers D, D;
E, E, screws which either diminish or extend the intervals where the timber
F, F, is lodged; G, G, spiral springs under the head of each screw, to give way
in case of any inequality in the timber to be cut; H, H, a section of the
carriage made on the usual principal, but having the sides as deep as the logs
intended to be cut, in which the timber moves; I, a roller in the carriage over
which the timber passes to be cut; K, K, a friction roller to prevent the
rollers D, D, from pushing the sides of the carriage out. Fig. 17, a plan of
the top and bottom rail B, B, Fig. 16, shewing the grove in which the pin of
the hollow roller D, D, slides. Fig. 18, A, A, sections of the top or bottom
rails of B, B, Fig. 16; B, B, section of the jointed slider; C, the loose pin of
the hollow rollers D, D, Fig. 16; D, D, section of the rollers D, D, Fig. 16.
Fig. 19, a plan of the jointed slider G, G, Fig. 16, shewing the holes through
which the pins pass to fix the rollers D, D, Fig. 16, at certain distances.
J. SLATER. (L.S.)
AND BE IT REMEMBERED, that on the Twenty-eighth day of August, in
the year of our Lord 1805, the aforesaid John Slater came before our said Lord
the King in His Chancery, and acknowledged the Specification aforesaid, and
all and every thing therein contained and specified, in form above written.
And also the Specification aforesaid was stampt according to the tenor of