IMPROVEMENTS IN SAWING MACHINES
Year: 1881

page_text: LETTERS PATENT to Samuel William Worssam, of the Firm of Samuel
Worssam and Co., Saw Mill Engineers, Oakley Works, Chelsea, in the County
of Middlesex, for an Invention of "IMPROVEMENTS IN SAWING MACHINES."
PROVISIONAL SPECIFICATION left by the said Samuel William Worssam at
the Office of the Commissioners of Patents on the 18th February 1881.
SAMUEL WILLIAM WORSSAM, of the Firm of Samuel Worssam and Co., Saw
Mill Engineers, Oakley Works, Chelsea, in the County of Middlesex. "IMPROVE-
MENTS IN SAWING MACHINES."
According to this Invention horizontal sawing machines are made to give two
or more cuts during one traverse of a log or piece of timber operated upon.
Referring to the Drawings, in which Fig. 1 is a side elevation and Fig. 2 a plan,
A, A', are two independent horizontal cross-guides arranged respectively at opposite
sides of suitable uprights C, C. Each horizontal cross-guide carries a swing
frame (B, B',) fitted with one or more saws. I have shewn one saw to cach.
The swing frames carrying the saws are reciprocated by means of two inde-
pendent connecting rods D, 'D', taking motion from a double throw crank-shaft E.
When one saw frame is travelling from left to right the other is travelling from
right to left.
The two horizontal cross guides carrying the swing frames and saws can be raised
or lowered simultaneously or independently of each other by vertical screws F1, F2,
F3, F4, and bevel wheels G1, G2, G3, G4, to suit the various thicknesses of the required
boards or planks. The construction may be modified, and in some cases the
horizontal cross guides for carrying the swing frames may be both at one side,
instead of at opposite sides of the uprights. Or two sets of uprights may be
provided each with a horizontal cross slide and swing frame.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Samuel William Worssam in the Great Seal Patent Office on the
18th August 1881.
SAMUEL WILLIAM WORSSAM, of the Firm of Samuel Worssam and Co., Saw
Mill Engineers, Oakley Works, Chelsea, in the County of Middlesex. "IMPROVE-
MENTS IN SAWING MACHINES."
According to this Invention horizontal sawing machines are made to give two or
more cuts during one traverse of a log or piece of timber operated upon.
Referring to the accompanying two Sheets of Drawings, in which like letters of
reference denote similar parts wherever they occur, Fig. 1 is a side elevation and
Fig. 2 a plan of a horizontal sawing machine according to my Invention. A, A¹, are
two independent horizontal cross guides arranged respectively at opposite sides of
suitable uprights C, C. Each horizontal cross guide carries a swing frame (B, B',)
fitted with one or more saws. I have shewn one saw to each.
The swing frames carrying the saws are reciprocated by means of two inde-
pendent connecting rods D, D³, taking. motion from a double throw crank shaft E.
When one saw frame is travelling from left to right the other is travelling from
right to left.
The two horizontal cross guides carrying the swing frames and saws can be
raised or lowered simultaneously or independently of each other by vertical
screws F1, F2, F3, F4, and bevel wheels G1, G2, G3, G, to suit the various thicknesses
of the required boards or planks.
Fig. 3, Sheet 2, is a side elevation of a modified arrangement of sawing machine
according to my Invention; Fig. 4 is a plan of the same; Fig. 5 is a plan partly in
section, and with the centre part broken out, showing one of the independent
horizontal cross guides and one swing frame; Fig. 6 is a face view of the same, and
Fig. 7 is a vertical cross section through one of the slides.
a is the saw blade; b, a rod connecting the two ends of the swing frame; c, a
tie bar. Each end of the swing frame is connected to a plate d, which slides in
V guides in the horizontal cross guide A. The crank shaft E carries two disc
cranks, and has its fast and loose pulleys situated between them.
In some cases the horizontal cross guides for carrying the swing frames may be
both at one side, instead of at opposite sides of the uprights. Or two sets of
uprights may be provided each with a horizontal cross slide and swing frame.
Having thus described the nature of the said Invention and the manner in
which it is to be carried into effect, I would have it understood that I do not claim
broadly the use of two saws in one machine so as to give two cuts simultaneously,
nor do I claim operating the two saws from one double throw crank shaft, but
what I do claim as secured to me under the Letters Patent herein before in part
recited is,―
Constructing and arranging sawing machines, substantially as described with
reference respectively to Figs. 1 and 2 and to Figs. 3 to 7 inclusive of the accom-
panying Drawings.
In witness whereof, I, the said Samuel William Worssam, have hereunto set
my hand and seal, this Seventeenth day of August, in the year of our
Lord One thousand eight hundred and eighty one