close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2405827

код для вставки
Aug. 13, 1946.
a; HAPPE
I ' PORTABLE ELECTRIC TOOL
Filed Jan. 11, 1945
2,495,871’
2,405,827
Patented Aug. 13, 1946
UNITED STATES PATENT OFFICE.
7
2,405,827
PORTABLE ELECTRIC TOOL
Reynold Happe, Pittstown, N. J., assignor to The
Singer Manufacturing Company, Elizabeth,
N. J ., a corporation of New Jersey
Application January 11, 1945, Serial No. 572,372
5 Claims.
(Cl. 172-36)
This invention relates to a portable electric tool ‘
of the kind including a motor housing and having
a hollow handle in which is mounted the control
switch for the circuit leads to a motor enclosed
within the housing.
_
The primary object of the invention is to pro
vide a portable tool of this kind having an im
2
switch trigger M, the upper portion of which is
normally projected outwardly over the top of the
wall portion In of the closure plate and substan
tially closes the upper portion of the handle slot
4. Immediately behind and engaging the switch
trigger I4 is the toggle arm ii of a switch it up
standing from and secured to the block [2. The
switch and switch trigger are thus supported on
proved switch unit adapted for complete assem
the closure plate quite independently of the
bly apart from the tool and for ready insertion
into the handle without requiring any circuit or :10 handle.
At the upper end of the switch It, and posi
other connections to be manually made therein.
tioned to engage the motor unit contacts-8 and 1
With the above and other objects in view, as
when the switch unit is inserted in the handle,
will hereinafter appear, the invention comprises
are contacts H and I8; and at the lower end of
the devices, combinations and arrangements of
the switch are binding screws I9, 20 for circuit
parts hereinafter set forth and illustrated in the .15 leads 2!, 22, respectively, of cable 23. The cable
accompanying drawing of a preferred embodi
23 is brought into the handle through the aper
ment of the invention, from which the several
ture 24 in the closure plate 8 and it, too, is se
features of the invention and the advantages at
cured to the plate, as by ground clamp 25 and
tained thereby will be readily understood by those
screws 26, 21; the screw 26 serving also as a bind
20
skilled in the art.
ing screw for the ground wire 28.
In the accompanying drawing—
The simplicity and advantages of the construc
Fig. l is a partially-sectioned, side elevation of
tion from the standpoint of manufacture as well
the rear end of a tool incorporating the present
as assembly will be apparent. Not only ‘may the
invention;
entire switch, trigger and cable unit be assembled
25
Fig. 2 is a partially-sectioned, rear elevation of
on the closure plate quite apart from the handle,
but no connections whatever are required to be
the tool;
Fig. 3 is a broken-out front elevation of the
made beyond the mere insertion of the unit into
rear portion of the tool;
the handle and the insertion of screws 9; and,
Fig. 4 is a bottom plan view of the handle; and
in addition, the plate and handle are so organized
30
Fig. 5 is a perspective view of the mounting
as to provide an integrated structure which is
plate portion of the switch unit.
both compact and extremely rugged.
The tool comprises a motor housing, generally
Having thus set forth the nature of the in
designated l, which merges into a depending
vention, what I claim herein is:
handle, generally designated 2. The handle is
1. In a portable tool including a motor housing,
hollow and open across the bottom or butt end; 35 an electric motor unit therein, a handle having
and extending centrally up the front wall 3 of the
a cavity open across the butt end and up the cen
handle is a slot 4 which forms a continuation of
ter only of the front of the handle, the upper
the bottom opening of the handle. Within the
housing I is an electric motor unit, a portion of
which is indicated at 5; and depending from the
unit adjacent the upper end of the handle cavity
are two motor circuit contacts 6 and ‘l.
The bottom or open end of the handle 2 is
adapted to be closed by an apertured plate, gen
erally designed 8, which may be secured to the
handle walls by screws 9. The closure plate 8
is provided at one end with an upstanding wall
portion H! which is adapted to fit and close the
lower part of the slot 4 in the front wall 3 of the
handle. The wall portion in is channelled, as at
H, and immediately behind the wall portion is
formed a stepped block 12. As will be recognized,
the whole closure plate structure 8 can readily
be cast or molded in one piece.
Pivoted on a stud iii in the channel H is a
end of the cavity communicating with the motor
housing, motor circuit contacts carried by the
motor unit and located adjacent the said upper
end of the handle cavity, an apertured plate
adapted to be secured to the butt end of the
handle to close the end of said cavity and having
45 a channel, upstanding wall portion forming a
partial closure for the front opening of the handle,
a ivoted switch trigger mounted on the plate
in the channel thereof independently of the
handle, said trigger normally projecting over said
50 wall portion of the plate for external operation
and substantially closing the remainder of the
front opening of the handle, a trigger-controlled
switch likewise mounted on the plate independ
ently of the handle and having circuit contacts
55 located to engage the said motor circuit contacts,
3
2,405,827
a cable extending through the plate aperture with
its leads connected to the switch, and a clamp se—
curing the cable to the closure plate.
2. In a portable tool including a motor hous
ing, an electric motor unit therein, a handle hav~
ing a cavity open across the butt end and up the
front of the handle, the upper end of the cavity
communicating with the motor housing,'motor
circuit contacts carried by the motor unit and
4
trigger normally projecting through the said
front opening for external operation, a trigger
controlled switch likewise mounted on the plate
independently of the handle and having circuit
contacts located to engage the said motor circuit
contacts, a cable extending through the plate
aperture with its leads connected to the switch
and means securing the cable to the closure plate.
4. In a portable tool including a motor hous
located adjacent the said upper end of the handle 10
ing, an electric motor unit therein, a hollow
cavity, an apertured plate adapted to be secured
handle having a cavity open across the butt end
to the butt end of the handle to close the end
of said cavity and having an upstanding wall
thereof, the upper end of the cavity communi
eating with the motor housing, motor circuit con
portion forming a partial closure for the front
opening of the handle, a pivoted switch trigger 15 tacts carried by the motor unit and having a
?xed location adjacent the said upper end of the
mounted on the plate independently of the
handle cavity, a plate secured to the butt end of
handle, said trigger normally projecting over
the handle to close the butt end opening of the
said wall portion of the plate for external oper
cavity, a switch-actuating member mounted on
ation and substantially closing the remainder of
the front opening of the handle, a trigger-con 20 the plate independently of the handle, and a
switch likewise mounted on the plate independ
trolled switch likewise mounted on the plate vin
ently of the handle and having ?xed circuit con
dependently of the handle and having circuit
tacts so located as to be brought into engage~
contacts located to engage the said motor cir
ment with said motor circuit contacts by the in
cuit contacts, a cable extending through the plate
aperture with its leads connected to the switch, 25 sertion of said switch into said handle.
5. In a portable tool, a hollow handle open at
and a clamp securing the cable to the closure
the butt end thereof, a front ‘wall of the handle
plate.
having a slot running substantially throughout
3. In a portable tool including a motor house
its length and forming a continuation of the butt
ing, an electric motor unit therein, a hollow
end opening, a closure plate for the said butt end
handle having a bottom opening and a front
opening, the upper end of the cavity communi 30 opening having an upstanding wall portion
adapted to close the lower portion of said slot,
eating with the motor housing, motor circuit con‘
and a switch unit secured to the plate within and
tacts carried by the motor unit and located ad
independently of the handle and incorporating a
jacent the said upper end of the handle cavity,
switch-actuating member normally projecting
an apertured plate adapted to be secured to the
outwardly through and substantially closing the
butt end of the handle to close the bottom open
upper portion of the said slot.
ing of said cavity, a pivoted switch trigger mount
ed on the plate independently of the handle, said
REYNOLD I'IAPPE.
Документ
Категория
Без категории
Просмотров
0
Размер файла
303 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа