вход по аккаунту


Патент USA US3098524

код для вставки
July 23, 1963
Filed Oct. 10. 1960
United States Patent 0” rice
Patented July 23, 1963
a saw chain 11 comprising a plurality of interconnecting
routers 12 are designed to travel.
The auxiliary handle and chain guard comprising the
invention is composed of two cooperating members. The
Paul C. Consoletti, Milford, Mass., assignor to Draper 5 ?rst member or main housing is generally indicated by
Corporation, Hopedale, Mass., a corporation of Maine
numeral 13 and the second ‘member (a combined hand
Filed Oct. 10, 1960, Ser. No. 61,578
nut and guard disc is indicated generally by the nu
1 Claim. (Cl. 143—32)
meral 14. The main housing 13- being generally circular
in shape is provided with a semi-circular ?ange 15 that
This invention pertains to power chain saws and more
protrudes at a right angle from the outer edge of base
especially to an auxiliary handle and chain guard that
16. Integnal with and intermediate the ends of ?ange 15
can ‘when required be easily assembled to the outer tip
an outwardly extending handle 17 is provided for control
or nose portion of a saw guide bar.
ling the free end of the saw. Centrally located within
It is an object of the invention to provide a combined
the main housing 13 and partially surrounded by surface
auxiliary handle and chain guard which can be quickly
attached or detached from the outermost tip of a saw 15 16 there is a raised surface or boss ‘18 which extends to
guide bar without the use of tools.
It is a further object to provide an open channel in
the guard assembly which while allowing chips and saw
dust to escape freely does not depart from the intended
safety feature of the guard.
vIt is still a further object to provide a combined hand
nut and guard disc that is less likely to be lost should
it be inadvertently displaced during attaching or detach
ing the same to the bar.
It is a further object to simplify the method of molding
in manufacture of the invention through elimination of
the ?ange which would normally be cast as an integral
part of the known unitary type handle and chain guard
devices that form a pocket into which the tip of the bar
Power chain saw operators under normal operating
conditions very often ‘require the assistance of a helper
to direct and control the free end of the guide bar
and chain. This is accomplished by attaching to the outer
tip of the bar an auxiliary handle such as those disclosed
in United States patents 2,432,567 and 2,910,099 and
which can be easily detached from the bar in order to
withdraw the bar endwise from the kerf. Although the
auxiliary handles most widely used on present-day chain
saws are quickly and easily attachable or detachable, they
do not provide the simplicity and safety features afforded
the side of the main housing 13 opposite the ?ange 15.
There is assembled and anchored in boss 18 ‘a threaded
stud 19 or as illustrated in FIG. 2, a ribbed neck bolt and
immediately adjacent thereto at least one locating pin 20.
20 Stud 19 is so located in boss 18 as to position it centrally
in the main housing ‘13.
The saw guide bar 10 having appropriate holes (not
shown) in the tip of the bar is adapted to receive the
threaded stud 19 and the locating pin 20. The locating
25 pin 20 passes through the guide bar 10 a sufficient dis
tance to assure proper positioning of the guide bar. The
threaded stud 19 extends through and beyond one face
of the guide bar 10 a distance su?icient to receive the
combined hand nut and guard disc 14 which as illustrated
30 in FIG. 2 comprises a centrally located internally threaded
hole 21 in the hub 22, a guard disc 23 that is formed
integral with said hub and extends above said disc ter
minating in the form of a gripping knob 24 for assembly
or disassembly by hand and without the aid of tools.
When assembled the guide bar 10 bears against the boss
18. The locating pin 20 and threaded stud 19 pass through
holes in the tip of the bar and the threaded stud 19 is
adapted to receive the combined hand nut and guard
disc 14 which ‘when tightened bears against the opposite
face of the bar. As shown in FIG. 2 ample clearance
is provided for the saw chain due to the guide bar being
seated on boss 18 allowing the tip of the bar and chain
by the instant invention. Applicant’s combined auxiliary
to overlie base 16. Additionally, the guard disc which
handle and chain guard simply comprises two detachable
members which when assembled on the guide bar are 45 is formed at ‘a point approximately midway between the
gripper knob 24 and that portion of the hub 22 which
connected by means of a ribbed neck bolt that is cen
bears against the bar offers an equal amount of clearance
trally anchored in the main housing and which passes
to the opposite face of the bar and chain. The channel
through the bar to receive the second member. The sec
or opening between the outer edge of the disc 23 and
ond member being a combined hand nut and guard disc
is adapted to cover the saw bar and chain a?ording the 50 the ?ange 15 allows the escape of chips and sawdust,
and yet is su?‘iciently narrow to prevent injury to a person
maximum amount of safety and yet leaving an open
controlling that end of a chain saw.
channel of su?icient width to prevent the accumulation
The large outside diameter of the guard disc offers
of chips and sawdust.
additional protection against injury should an attempt be
The invention will be described in greater detail in the
following disclosure wherein reference is made to the 55 made to remove the auxiliary handle while the saw is
accompanying ?gures of drawing in which:
still running. Although the handle 17 is the only type
illustrated in the drawing, various types of handles such
FIG. 1 is a side elevational view showing the invention
as the looped type or double handles may be used satis
applied to the outer tip of the saw guide bar.
factorily and with equal results.
FIG. 2 is a plan view of the invention partially in sec
While one embodiment of the invention has been dis
tion showing the two detachable members assembled to 60
closed, it is to be understood that the inventive concept
the saw guide bar.
may be carried out in a number of ways. This invention
The invention as illustrated in FIG. 1 is assembled to a
common type saw guide bar 10 around the periphery
is, therefore, not to be limited to the precise details de—
of which and in the direction of the indicating arrows
scribed, but is intended to embrace all variations and
modi?cations thereof falling 'within the spirit of the in
vention and the scope of the claim.
I claim:
In a chain saw, a guide bar having a rounded outer
guide bar, and a second member comprising a cent-rally
threaded combination hand nut and guard ‘disc receivable
on said threaded stud to clamp said guide bar between
said boss and combination hand nut and disc, the latter
end, a chain encompassing the periphery of said guide
bar including said rounded outer end, the improvement
extending over an area substantially coextensive with the
base portion of said ?rst member.
which comprises a combination chain guard and handle
including a ?rst member having a base portion With an
inwardly directed boss ?ushingly engaged with one face
of said guide bar, an integral ?ange extending around a 10
portion of the periphery of said base portion, an out
wardly projecting handle integral with said ?ange, a locat
ing pin and a threaded stud both ?xed to said boss and
extending inwardly therefrom and projecting through said‘
References Cited in the ?le of this patent
Bailey ________________ __ Feb. 6, 1912
Wolf ________________ __. July 11, 1939
Gorden ____'____' ______ __ Oct. 24, 1950
Quirks _____ _..‘ _______ __ June 16, 1953
Без категории
Размер файла
243 Кб
Пожаловаться на содержимое документа