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Патент USA US2090565

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Aug. 17, 1937.
Filed Aug. 13, 1936
5 Sheets-Sheet 2
Aug. 17, 1937.
Filed Aug. 15, 1936
3 Sheets-Sheet 3
(7 1 E,
By gwmah
A itorneys
Patented Aug. 17, 1937
Charles E. Abbe and William 0. Ward, Flint,
Application August 13, 1936, Serial No. 95,923
1 Claim.
(Cl. 268-35)
This invention appertains to new and useful
improvements in means for operating closures,
and more particularly to closures such as garage
doors and the like.
rl‘he principal object of the present invention
is to provide a garage door operator which can
be automatically operated by a vehicle approach
ing the garage or in the act of leaving the garage.
Another important object of the invention is to
10 provide a closure operator of the character de
scribed which will be substantially fool-proof in
Another important object of the invention is
to provide a closure operator of the character
15 stated which will, because of its simple construc
tion not be susceptible to the ready development
of defects.
These and various other important objects and
advantages of the invention will become appar
20 ent to the reader.
In the drawings:
Figure 1 represents a horizontal sectional view
through the front portion of the garage showing
the doors in closed position.
25 Figure 2 represents a fragmentary vertical sec
tional view through the forward portion of a
garage showing the doors in closed position and
also by dotted lines in open position.
Figure 3 is a fragmentary vertical sectional
30 view taken substantially on line 3—3 of Figure 1,
looking forwardly.
Referring to the drawings wherein like nu
merals designate like parts, it can be seen that
the garage is generally referred to by numeral 5
36 and. consists of the side walls 6-6 and the roof 1.
Numeral 8 represents the foundation for the
garage which extends forwardly of the front of
the garage. A substantial portion of the foun
dation extending from a forward point of the
40 garage and into the garage is provided with the
At the forward end of each side wall 6 is a bal
ancing unit generally referred to by numeral 20
(see Figure 2). A description of one of these
units will su?‘ice for both. The unit consists of
the casing 2! in the upper portion of which is
an inverted T-crank 22, the upstanding portion
of which is connected to the clevis 23 of the arm
24 projecting inwardly from the section b of the
corresponding doors I5—I6.
A rod 25 extends upwardly from the inner plat 10
form I i and connects by the turnbuckle 26 to one
of the remaining arms of the T-crank 22, while
the last of the arms of the T-crank 22 has a rod
2'! depending therefrom and provided with a
weight 28 at its lower end. Obviously, this
weight 28 serves to maintain the platforms l0—l I
always in elevated position as shown in Figure 2,
maintaining the doors closed.
For causing the sections a—b of each of the
doors l5—l6 to operate coordinately, a link mem 20
ber 29-extends from each of the vertical frame
members l8 to connect to: the outer end of a
rocker 30 located on the upper edge of the adja
cent door section I), while the inner end of this
rocker is connected to the adjacent section a by 25
a pivotal link 3!. Thus, the door sections a—b
will fold as they open.
Numeral 32 represents a casing which extends
horizontally and is secured to the upper portion
of the door frame so as to encase the rocker 30 30
and links 3l—29 as well as to act as an abut
ment for the door section.
As can be seen in Figure 2, numeral 33 repre
sents a bumper for the platform I I and a suitable 35
locking means generally referred to by numeral
34 can be employed under the front platform I0.
This means 34 may consist of the push rod 35
operative through guides 36—36 and operating
a bell crank 31 which in turn is connected to a 40
depression 9. Numerals l0—ll represent the
bolt 38 operative through a keeper 39 provided
outside and inside treadle platforms which are
hingedly connected as at I2 to the slide board
13 which is vertically slidable in the guide trough
l4 formed in the foundation 8.
Numerals l5-l6 generally refer to the two
on the bottom of the depression 9, so that the
platform H] can be depressed and the bolt 38
operated to pass through the keeper 39 so that
doors which are hingedly connected as at l‘l—l'l
to the vertical members l8—l 8 of the door frame
and each of these doors is made up of a pair of
sections a—b hingedly connected together as at c.
The free ends of the treadle plates lll—ll are
provided with rollers I9v on their under side for
riding engagement against the bottom of the
55 depression 9.
the doors will remain in open or closed position. 45
It is also preferable that one of the door sec
tions at be provided with a supplemental door 03
hingedly connected as at e to its companion sec
tion b. A suitable latch mechanism 7’ can be 50
provided for this small door d.
While the foregoing speci?cation sets forth
the invention in speci?c terms, it is to be under- !
stood that numerous changes in the shape, size,
and materials may be resorted to without depart~ .
ing from the spirit and scope of the invention as
claimed hereinafter.
Having described the invention, what is claimed
as new is:
A garage door closure comprising a depressible
treadle platform, a base upon which the platform
operates, a pair of swingable doors, operating
means between the platform and the doors,
whereby depression of the platform will cause the
doors to swing to an open position, a slidable rod
10 having one end protruding beyond one side of
the platform, guide means ' under the platform
through which the rod isslidable, a rockable bell
crank to which one end of the rod is pivotally
connected, and a keeper with which the opposite
end of the bell crank is engageable when the plat
form is in depressed. position for maintaining the
said platform in depressed position and the doors
in open position.
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