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Патент USA US2406979

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Sept. 3, 1946.
Filled Sept, 20, 1945
3 sheets-sheets
‘ 2,400,979
Patented Sept. 3, 71946
John F. Wolfe, Lapeer, Mich. -
Application September 20, 1943, Serial No. 503,133
1 Claim.
(Cl. 143-159)
As illustrated to advantage in Figures 2 and 3
The present invention relates to new and useful
improvements in covers for circular saws and
of the drawings, the guide 1 comprises pairs of
upper and lower transverse bars vll between which
pairs of upper and lower longitudinal bars 5 ex
tend. Thus, what may be considered a vertical
dados, and has for ‘its primary object to provide,
in a manner as hereinafter set forth, novel means
for protecting tools of this character from the
elements, in addition to protecting workmen
passage through the guide I is provided, which
passage slidably accommodates a hanger 6.
against injury.
The hanger 6 is in the form of a substantially I
?at tube 1 of suitable material having in its op
Another very important object of the invention
is to provide a cover of the aforementioned char
posed side walls vertically spaced openings 8. A
acter which is free or independent of the tool or 10 pin 9 is insertable selectively in the openings 8
table and which, through the medium of unique
supporting means, may be expeditiously raised to
permit access to be had to the saw or dado.
Still another important object of the invention
is to provide a cover of the character set forth for
saws and dados which will prevent sawdust from
being thrown into the air to be inhaled by the
sawyer and other workmen.
A still further important object of the inven
tion is to provide a circular saw or dado cover
which may be expeditiously adjusted vertically to
meet various conditions.
in the upper portion of the hanger 6 for suspend
ing said hanger in the guide I.
Other objects of the invention are to provide
forth which will be comparatively simple in con
struction, strong, durable, highly ef?cient and re
liable in use, compact, and which may be manu
factured at low cost.
All of the foregoing and still further objects
and advantages of the invention will become ap
parent from a study of the following speci?ca
tion, taken in connection with the accompanying
drawings, wherein like characters of reference
designate corresponding parts throughout the
Figure 1 is a view in side elevation of a cover
constructed in accordance with the present in
Figure 2 is a view in vertical section through
the device, taken substantially on the line 2-2
of Figure 1.
or hood for the reception of a circular saw or
dado ll mounted for operation on a table l2.
a circular saw or dado cover of the character set
several views, and wherein:
As best seen in
Figure 2 of the drawings, the pin 9 is operable
15 in the guide I and engageable with the bars 5
thereof. Thus, the pin 9 positively limits the
vertical sliding movement of the hanger 6 in
the guide I, in addition to suspending said hanger
therein. Suspended from the lower end of the
hanger 6 is a vertically adjustable and slidable
guard Ill. The guard i0 is in the form of a shield
Rising from the guard H1 is a flat shank l3 which
25 is slidable in the lower portion of the hanger 6.
Toward this end, the shank l3 has formed there
in a vertical slot M for communication with the
openings 8. The slot lll'accommodates a pin [5
which is insertable, selectively in the openings 8
30 in the lower portion of the hanger 6 for suspend
ing the guard l0 therefrom for vertical sliding
movement. Above the slot Hi, the shank i3 is
further provided with an opening it for regis
try with the openings 8 for receiving the pin l5
when vertical sliding movement of the guard I0
is not desired. The pins 9 and I5 are slightly
tapered to permit them to be tightly inserted in
the openings 8.
It is thought that the operation of the device
40 will be readily apparent from a consideration of
the foregoing. Briefly, the guard l0 is adapted
to be suspended by gravity over the tool II in
a manner to cover and protect same. If desired,
the supporting structure for the guard in may
Figure 3 is a bottom plan view, the end portion
of the guide being broken away.
Figure 4 is a view in side elevation of the upper ‘
portion of the guard.
be expeditiously adjusted to permit said guard.
to rest on the table l2. The guard may be se
Figure 5 is a view principally in vertical sec
cured in this position against raising and ex
tion, showing the device mounted for use out
posing the saw by inserting the pin 9 below
the guide I and engaging the pin I5 in the open
of doors.
Referring now to the drawings in detail, it will
50 ing 16.’ However, with the elements in the po
be seen that reference numeral l designates gen
sition of Figure 2 of the drawings, the guard
erally a substantially rectangular, skeletonized,
box-like guide of suitable material, preferably
Ill may be expeditiously raised to permit access
to be had to the circular saw or dado ll. Up
metal. On an indoor installation, the guide l
ward movement of the guard III in the hanger
is suspended from a ceiling 2 through the medium
55 II is governed by the length of the slot l4 and.
of hangers 3.
vertical movement of said hanger 6 in the guide
I I is positively limited by the pin 9.
‘In Figure 5 of the drawings, the device is
shown in use for out-door work. When thus
used, a supporting structure I8 is erected adja
cent the side of the table H) which is remote
from the sawyer. The structure It? includes a
pair of posts 20, from the upper end portions of
which arms 2| project horizontally over the ta
transverse bars and forming therewith a verti
cal passage in said guide, means for suspending
the guide from a support, a substantially ?at
tubular hanger slidably disposed in the passage
and provided with vertically spaced openings
therein, a pin insertable in openings in said
hanger above and below the lower pair of lon
gitudinal bars, selectively, said pin when inserted
ble l9. Suitable braces or struts 22 are provided 10 in openings above said lower pair of longitudinal
for the posts 29 and the arms 2|. The guide I
is suspended from the free end portions of the
arms 2| over the saw or dado 23 through the
medium of hangers 24. In other respects this
embodiment of the invention is substantially sim
ilar in construction and operation to that illus
trated in Figures 1 to 4, inclusive, of the draw
It is believed that the many advantages of a
circular saw and dado cover constructed in ac- "
cordance with the present invention will be read
ily understood, and although preferred embodi
ments of the device are as illustrated and de
scribed, it is to be understood that further
changes and modi?cations in the details of con
struction may be resorted to which will fall with
in the scope of the invention as claimed.
What is claimed is:
bars suspending said hanger from said lower pair
of bars for adjustment of the hanger upwardly
in said passage and being adapted to coact with
the upper pair of longitudinal bars to limit up
ward adjustment of said hanger, said pin when
inserted in openings below the lower pair of lon
gitudinal bars coacting with said lower pair of
bars to ‘prevent upward adjustment of the hang
er, a guard, a substantially ?at shank rising from
said guard and vertically adjustable slidably in
the lower part of the hanger, said shank hav
ing an opening and a vertical slot therein verti
cally spaced apart and adapted to be registered,
respectively, with openings in said hanger, and
, a second pin insertable selectively in the open
ing and slot in the shank and in openings in
the hanger with which said opening and slot in
the shank may be registered to thereby connect
the shank to the hanger against vertical move
A circular saw cover comprising a skeleton box
ment relative thereto or for vertical slidable ad
like guide including upper and lower transverse
bars, and vertically spaced pairs of upper and 30 justment in said hanger.
lower longitudinal bars extending between the
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