Pneumatic Apparatus for use in connection with Wood Working and other Machinery for Removal of Dust and Cuttings.
Year: 1892

page_text: Date of Application, 12th Apr., 1892
Complete Specification Left, 12th Jan., 1893-Accepted, 18th Feb., 1893
PROVISIONAL SPECIFICATION.
Pneumatic Apparatus for use in connection with Wood Working
and other Machinery for Removal of Dust and Cuttings.
I WILLIAM WORBY BEAUMONT of 100 Palace Road Tulse Hill S W. Civil
Engineer do hereby declare the nature of this invention to be as follows:-
My invention relates to the apparatus employed in connection with wood working
machinery for the pneumatic collection and transport of the sawdust and cuttings.
The invention is more particularly applicable to circular saws & disc cutters
& consists in fitting to one or both sides or the ends of the hoppers hoods or
covers of such saws or disc tools one or more nozzles, jets or conduits through
which the air on its way to the delivery pipe of the hopper enters and impinges
upon the sides or edges or both of the saw and teeth & thus clears them of dust
& cuttings which are forthwith carried away by the air current & prevented
from being carried up or out & scattered by the saw or cutter. The nozzles or
conduits in some cases are removable & adjustable & are applicable to machine
tools other than wood working saws & disc cutters.
Dated this 12th day of Anril 1892.
W. WORBY BEAUMONT.
COMPLETE SPECIFICATION.
Pneumatic Apparatus for use in connection with Wood Working
and other Machinery for Removal of Dust and Cuttings.
I, WILLIAM WORBY BEAUMONT 100 Palace Road Tulse Hill, S. W. Civil
Engineer, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
My invention relates to the apparatus employed in connection with wood working
machinery for the pneumatic collection & transport of the sawdust & cuttings.
The invention is more particularly applicable to circular saws, & disc cutters &
consists in fitting to one or both sides or the ends of the hoppers, hoods or covers of
such saws or disc tools, one or more nozzles, jets or conduits through which the air
on its way to the delivery pipe of the hopper enters impinges upon the sides or
edges or both of the saw & teeth and thus cleans them of dust & cuttings which
are forthwith carried away by the air current and prevented from being carried up
or out and scattered by the saw or cutter.
The nozzles or conduits in some cases
are removable & adjustable.
My invention is illustrated by the drawings hereunto attached.
drawings,
In these
Fig. I is a transverse section of an ordinary circular saw bench and of the
pneumatic saw dust carrying pipe and hopper.
Fig. II is a longitudinal section of part of such a bench showing the hopper
partly in section.
In Figs. I & II, A is the saw bench top, B the saw on the spindle C and
DD the hopper for receiving the saw dust which is carried away by the pipe or
duct G usually connected to an exhaust fan.
At E, E, Fig. I and E Fig. II are shown air inlet nozzles let into the sides of the
hopper and attached thereto by suitable means such as screws or bolts and nuts or
may be rivetted on. The nozzle E' it will usually be necessary to attach by means
which will permit its ready removal & replacement to permit the removal of the saw.
Poin I

page_text: The hopper D is usually made of sheet iron & the nozzles might be made of the
same material or of cast iron or of wood. The area of the air inlets of the nozzles
should together usually be slightly less that the area of the pipe G & generally
must be such that a high speed of inlet is given to the air as it enters & impinges
upon the sides of the saw near the teeth.
In Fig. II an inlet nozzle F is shown attached to one end of the hopper so that
the air admitted, impinges tangentially upon & blows the dust from the spaces
between the teeth:
The nozzles E E' will usually be sufficient and sometimes the nozzle F will be
sufficient, but all or either may be used, and they may be in the positions shown or
in such other positions as may be necessary to suit the position of the outlet &
pipe Gor other modifying circumstances.
Having now particularly described and ascertained the nature of my said' invén-
tion & in what manner the same is to be performed, I declare that what I
claim is :-
:-
In the hoppers attached to saw benches for the collection & pneumatic transport
of saw dust, the admission of air by inlet nozzles, openings or ducts so formed and
placed that the air impinges upon the sides near or at the periphery of the saw or
tangentially thereto substantially as herein described and shown.
Dated this 11th day of January 1893.
W. WORBY BEAUMONT.