Improvements in Circular kaw Benches
Year: 1898

page_text: Date of Application, 19th May, 1898
Complete Specification Left, 20th Feb., 1899-Accepted, 1st Apr.,
1899
We, Jonx WILLIAM HEBB, of 121, Warley Road, Halifax, Machinist, and
GEORGE SQUIRE, of 23, Hermon Grove, Halifax, Cabinet Maker, both in the County
of York, do hereby declare the nature of this invention to be as follows:-
The object of our invention is to construct circular saw benches so that the saw
may be lowered underneath the bench and an open table obtained, the timber to
be cut may thus be fed at any angle to the saw either for cross cut or straight
sawing.
Underneath the table we mount a horizontal shaft, upon this shaft are pivotted
two or more levers or beams upon one end of which is mounted a second shaft
carrying the saw, and driving pulley, at the other ends of these levers or beams
are suitable counter balance weights, upon the first horizontal shaft is a driving
pulley which by means of belt drives the saw.
Also upon this shaft is a fast and loose pulley driven from any suitable driving
shaft; a treadle lever upon this shaft raises or lowers the saw as desired, when
the saw is raised and requires to be stationary, a screwed spindle operated by hand
wheel, screws into the beam and holds the same in a fixed position.
By this arrangement when cross cutting the saw cuts from underneath, and is
regulated according to the pressure or weight put upon the treadle lever, for
straight cutting the saw is made a fixture as before described.
1000
JOHN E. WALSH,
Waterhouse Chambers, Crossley Street, Halifax,
Patent Agent for the Applicants.
Improvements in Circular kaw Benches,
We, JOHN WILLIAM HEBB, of 115, Prospect Road, Scarborough, late of 121,
Warley Road, Halifax, Machinist, and GEORGE SQUIRE, of 23, Herman Grove,
Halifax, Cabinet Maker, both in the County of York, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particu-
larly described and ascertained in and by the following statement:-
The object of our invention is to construct circular saw benches so that the
saw when not in use may be lowered underneath the table, in this way we obtain
an open table and the timber to be cut may thus be fed at any angle to the saw
either for cross cut or straight sawing, also by this construction of saw bench the
risk of accident to the operator is considerably reduced.

page_text: Fig. 2 is a side elevation in section of our improved saw bench showing the
position of saw when not in use.
Fig. 3 is a plan of Fig. 2.
Underneath the table we mount a horizontal shaft A, upon this shaft are pivotted
two or more levers, beams, or radial arms B, carrying a second shaft C, upon this
shaft C is mounted the saw D), at the other end of these levers or beams B are
fixed suitable counter, balance weights E for counterbalancing the weight of the
saw, shaft, and levers, upon the shaft A.
Upon the shaft C are preferably two pulleys F, operated by belts G, from a
larger pulley H upon the shaft A, also upon the shaft A, at one end is a fast and
loose pulley J driven from any convenient driving shaft.
For raising the saw into position shown at Fig. 1 we employ a suitable treadle
lever pivotted upon a stud L fixed upon the saw bench frame M; this treadle
lever is connected by connecting rod N to the beam or carrier bracket B, so that
upon the treadle being depressed, the lever K moving upon its fulcrum L raises
the saw as desired.
By this construction of saw bench, when the saw I) is required for cross cutting,
the fence is fixed for feeding the wood at the desired angle to the saw, and the saw
raised by the operator putting his foot upon the treadle lever K and depressing
same, as the saw 1) rises it cuts from underneath, the strength of which may be
regulated by the pressure or weight put upon the treadle lever.
For straight cutting the saw is raised into the position shown at Fig. 1, and a
suitable bar or rod P hinged or pivotted upon the bench frame is employed, upon
'this rod P is fixed or formed a fork R, which, when the arm lever or beam B
carrying the saw D, reaches a vertical position, the bar is moved, and the fork R
clips the same, so making the saw a fixture.
By this arrangement of mounting circular saws, the saw will cut a greater width
of board than its own diameter, and in cross cutting boards or slabs, it is found to
be a great advantage; also after use, immediately the treadle lever is released,
the saw drops underneath the table, and being continually driven, immediately it
is raised as aforesaid, it commences work, the driving pulleys of the saw being
below the table a clear and open table is obtained; there being nothing to interfere
with the manipulation of the wood to be cut, a greater amount of work can be done.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is:
1. Constructing circular saw benches with a rising and falling saw, mounted so
that it may be lowered underneath the table when not in use, or raised for cutting,
for the purposes set forth.
2. Constructing circular saw benches with the saw mounted upon a shaft C
carried by pivotted levers, beams, or radial arms B, raised or lowered by means of a
treadle lever K, in the manner and for the purposes, substantially as set forth.
3. In circular saw benches, mounting the saw upon a shaft C carried by pivotted
beams or brackets 1) upon a driving shaft A, and lever or bar P having a fork R
in the manner and for the purposes set forth.
4. In circular saw benches, mounting the saw upon a shaft C carried by radial
arms or weighted pivotted levers B, attached to a treadle lever K, and the saw
driven by means of pulleys F and H, such driving mechanism being below the
table, for the purposes set forth.
tel:htuouth,
dow of War 1800
JOHN E. WALSH,
Waterhouse Chambers, Crossley Street, Halifax,
Patent Agent for the Applicants.