IMPROVEMENTS IN THE CONSTRUCTION OF SAWING MACHINERY
Year: 1877

page_text: LETTERS PATENT to Frederick Holmes, of Hill Street, Peckham, in the County
of Surrey, and Richard James Harris Saunders, of Ventnor, in the Isle of
Wight, for the Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF
SAWING MACHINERY.”
aled the 22nd February 1878, and dated the 24th August 187
PROVISIONAL SPECIFICATION left by the said Frederick Holmes and
Richard James Harris Saunders at the Office of the Commissioners of Patents
on the 24th August 1877.
«
FREDERICK HOLMES, of Hill Street, Peckham, in the County of Surrey, and
RICHARD JAMES HARRIS SAUNDERS, of Ventnor, in the Isle of Wight. IMPROVE-
MENTS IN THE CONSTRUCTION OF SAWING MACHINERY."
Our Invention consists, in the first place, of an automatic bed plate for frame and
other similar sawing machinery, whereby not only is cach distinct piece of wood
securely held, but also provided with a firm support above and below for some
distance on either side of the saws.
17.11.
Upon the accompanying Sheet of Drawings Fig. 1- represents a front view of a .
portion of an ordinary frame fitted with our Invention, Fig. 2 being a side view of
the same.
The bed plate consists chiefly of an upper and lower portion D, D¹, the latter being
firmly secured to the side standards A, A, whereas the former D is moveable, being
brought to bear upon the wood L about to be sawn by suitable levers E, F, and
counterweights G, G. Each of these portions D, D', is constructed of a number of
narrow bars corresponding to the number of saws in use, the whole forming two
separate gratings through which the saws C, C, are arranged to work.
The second part of our Invention relates to an improved "feed motion," by means
of which any lengths of wood or other material can readily be cut from end to end,
thereby avoiding any waste; as well as ensuring a more regular cutting.. This feed

page_text: is effected by the combination of a revolving roller H, and an endless chain or band I,
upon which are secured at suitable intervals a number of "dogs" or claws K, K,
which carry the wood L to be sawn under the roller H whence it is fed on to the
saws C, C.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frederick Holmes and Richard James Harris Saunders in the Great
Seal Patent Office on the 23rd February 1878.
FREDERICK HOLMES, of Hill Street, Peckham, in the County of Surrey, and
RICHARD JAMES HARRIS SAUNDERS, of Ventnor, if the Isle of Wight. "IMPROVE-
MENTS IN THE CONSTRUCTION OF SAWING MACHINERY."
Our Invention consists, in the first place, of an automatic bed plate suitable for
frame and other similar sawing machinery, whereby not only is each distinct piece
of wood or other material to be sawn securely held, but also provided with a firm
support above and below during the process of sawing. For this purpose we
construct the bed plate, or that portion of it through which the saws work, of two
distinct "grids" or gratings, one of these grids being firmly secured between the
side standards at a suitable height, whilst the other is fitted directly over and
connected to the lower or former one, in such a manner as to allow of a certain
amount of movement in an upward and downward direction, either by a spring
bolt or other similar device. This movement of the upper "grid" is regulated by
the pressure of two or more weights or springs brought to bear upon its upper
surface by means of suitable levers and rods. In addition to the above we also
provide on either side of the bed plate or other suitable position two or more self-
adjusting "fences" or side guides, so arranged either by the action of springs or
counterweights, as to bear on and press against the sides of the wood or material as
it is fed on to the saws.
The second part of our Invention relates to an improved feed motion by means of
which any lengths, either long or short, of wood or other similar material can
readily be cut from end to end, thereby avoiding all waste, as well as ensuring a more
regular cutting.
In carrying out this part of our Invention we arrange one or more feed rollers in
combination with an endless chain or band furnished with a number of suitable dogs
or claws, in such a manner that the various lengths to be sawn are carried in one
continuous line from the feed hopper or other source of supply on to the said roller
or rollers, whence they are fed on to the saws.
From an inspection of the accompanying Sheet of Drawings, it will be seen that
our improvements can readily be fitted on to existing frames though the precise
details may be varied while retaining the essential features of our Invention as
described.
DESCRIPTION OF DRAWINGS..
Upon the accompanying Sheet of Drawings, which illustrates an ordinary frame
embodying our Invention, Fig. 1 represents a sectional elevation of a frame as seen
LL
The.
nation
AL

page_text: A, A, indicate the side standards; B, bow carrying the saws; C, C, the saws;
D, D, the two grids or gratings, together forming the bed plate; d, d, spring bolts
connecting the grids D, D, together; E, F, pressure bars bearing upon the upper
grid D; G, G, counterweights; H, H, levers for do. ; I, I, side fences; K, feed roller;
L, endless chain; 1, 1, dogs or claws secured on to chain L; M, deal ends or other
material to be sawn; N, supply bopper; O, driving shaft; P, crank; Q, connecting
rod; R, eccentric; S, eccentric rod; T, ratchet lever; U, pawl; V, ratchet wheel;
W, W, toothed wheel communicating motion from feed roller K to chain L; X, X, fast
and loose pulleys; Y, fly wheel.
Having now described and ascertained the nature of our Invention, and in what
manner the same is or may be carried out, we would have it understood that we do
not confine ourselves to the precise details herein set forth, as such may be varied
while retaining the essential features of our Invention, but what we do claim as
secured to us by the herein-before in part recited Letters Patent is,―
Firstly. The arrangement and construction of bed plates for frame and other
similar sawing machinery, whereby each distinct cutting is firmly supported above
and below during the process of sawing, substantially as described.
Secondly. The combination of the feed roller and endless chain for the purpose set
forth.
In witness whereof, we, the said Frederick Holmes and Richard James Harris
Saunders, have hereunto set our hand and seal, this Twenty-first day of
February, in the year of our Lord One thousand eight hundred and seventy-
eight
FREDERICK HOLMES.
RICHARD JAMES HARRIS SAUNDERS.
(L.S.)
(L.S.)