MENTS IN OR CONNECTED WITH CAW.CITADDENING MACHINED
Year: 1883

page_text: LETTERS PATENT to Harold Sands of the Eagle Works in the town and
"IMPROVE-
county of the Town of Nottingham Engineer for an Invention of '
MENTS IN OR CONNECTED WITH CAW.CITADDENING MACHINED
PROVISIONAL SPECIFICATION left by the said Harold Sands at the Office
of the Commissioners of Patents on the 6th October 1883.
HAROLD SANDS, of the Eagle Works, in the Town and County of the Town
of Nottingham Engineer, "IMPROVEMENTS IN OR CONNECTED WITH SAW-
SHARPENING MACHINERY."
This Invention relates to improvements in or connected with saw-sharpening
machines of the kind in which there is a revolving disc of emery or other abrading
material. With such machines as at present constructed there is the serious
objection that the fine dust or particles caused by the abrading action is spread or
dispersed around the machine making the air very objectionable for the breathing
of the attendant worker, and also causing extra friction in the bearings of the
machine. This Invention, therefore has for its object the obviation or removal of
this objection to the action of the machine and the Invention consists in fitting to
the machine an exhaust fan driven by a belt or gearing from a pulley on the
machine, the exhaust fan having a tube or mouthpiece which is so placed as to be
in the best position to catch and receive the dust or fine particles due to the
saw-sharpening action,
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Harold Sands in the Patent Office on the 4th April 1884.
· HAROLD SANDS, of the Eagle Works in the Town and County of the Town of
Nottingham, Engineer, IMPROVEMENTS IN OR CONNECTED WITH SAW-SHARPENING
MACHINERY.
My said Invention relates to improvements in or connected with saw-sharpening
machines of the kind in which there is a revolving disc of emery or other abrading
material. With such machines as at present constructed there is the serious
Price Ad 1

page_text: objection that the fine dust or particles caused by the abrading action is spread or
dispersed around the machine making the air very objectionable for the breathing
of the attendant worker and also causing rapid deterioration of the bearings of the
machine, through the dust becoming intermixed with the lubricant. This Invention
therefore has for its object the obviation or removal of this objection to the action
of the machine and the Invention consists in fitting to the machine an exhaust fan
driven by a belt or gearing from a pulley on the machine, the exhaust fan having
a tube or mouthpiece which is so placed as to be in the best position to catch and
receive the dust or fine particles due to the saw-sharpening action.
And in order that my said Invention and the manner of performing the same
may be properly understood I hereunto append a sheet of explanatory drawings to
be hereinafter referred to and representing my improvements. In these drawings
the same reference numerals are used to mark the same or like parts wherever
they are repeated.
Figure, 1, on the accompanying sheet of drawings is a side elevation and
Figure, 2, is a front elevation of a saw-sharpening. machine having my
improvements. An exhaust fan, 3, is fitted at one side near the top of the
standard, 4, of the machine, and it is driven by a belt, 5, from a pulley, 6, on the
shaft which gives motion to the emery wheel in the usual manner. This exhaust
fan, 3, is fitted over an opening leading into a passage, 7, formed in the head of
the standard, 4. There is an opening into this passage, 7, formed in the table, 8,
of the machine and over this opening there is fitted a bonnet or shield, 9, which
has its opening or mouth facing the point where the emery wheel acts upon the
saw being sharpened. The fine dust or particles are sucked into the passage, 7,
by the action of the fan, 3, and discharged into a tank or receptacle filled with
water, thus preserving the circumambient air from being rendered injurious to the
workmen and preventing the abraded particles from getting into the joints
working parts and bearings of the machine.
Having now particularly described my said Invention and the manner of
performing the same, I have to state that I do not restrict myself to the precise
details herein described or delineated but that what I believe to be novel and
original and claim as the Invention secured to me by and in terms of the
herein before in part recited Letters Patent is :-
The combination or arrangement of an exhaust fan with a saw-sharpening
machine, substantially as and for the purpose herein before described with reference
to the accompanying drawings.
In Witness whereof, I, the said Harold Sands, have hereunto set my hand and
seal this second day of April, in the year of our Lord, One thousand eight
hundred and eighty four.
'
.
Witness
LOCK MOORE
Patent Agent
Nottingham
HAROLD SANDS. (L.S.)