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Патент USA US2079576

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Mag/'4, 1937.
.1. H. McDERMENT
2,079,576
VENTILATOR
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.
Filed May 18, 1956
5 Sheets-Sheet 1
32
INVENTOR.‘
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BY
ATTORNEY.
May 4, 1937.
2,079,576
J. H. MCDERMENT
L\VENTILATOR
Filed May 18, 1956
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5 Sheets-Sheet 2
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INVENTOR.
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BY
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ATTORNEY.
May 4, 1937.
J. H. MCDERMENT
2,079,576
VENTILATOR
Filed May 18, 1936
5 Sheets-Sheet 5
Tum
INVENTOR.
BY
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ATTORNEY.
May 4, 1937.
J. H._ MCDERM‘ENT
2,079,576
VENTILATOR
Filed May 18, 1936
5 Sheets-Sheet 4
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INVENTOR.
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BY MNe/MM/M’
ATTORNEY.‘_
May 4, 1937.
2,079,576
J. H. MCDERMENT
VENTILATO R
Filed May 18, 1936
5 Sheets-Sheet s
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BY
INVENTOR.
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ATTORNEY.
Patented May 4, 1937
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UNITED STATES PATENT OFFICE
2,07 9,57 6
VENTILATOR
James H. McDerment, Cleveland, Ohio, assignor
to The Swartwout Company, Cleveland, Ohio, a
corporation of Ohio
Application May 18, 1936, Serial No. 80,248
8 Claims. (01. 98-42)
‘ This invention relates to a ventilator construc-
tion and has for its principal object to provide a
superior construction for a device of this type and.
one which, while being relatively inexpensive, will
5 be highly satisfactory in use and convenient of
operation.
With the foregoing and other objects in view
which will be in part apparent and in part pointed out hereinafter, the invention consists in all
10 the novel features of construction and arrange-
ment of parts hereinafter described and illustrated in the accompanying drawings wherein Fig.
‘1 is a transverse section taken through a ridge
ventilator embodying the invention; Figs. 2 and
15 2a. taken together makeup a central longitudinal
' section therethrough; Figs. 3 and 3a taken together make up a horizontal section corresponding substantially to the line 3-3 of Fig. 1; and
, Fig. 4 is a detail fragmentary section taken.
20 through a portion of the screw threaded operat-
gram guide means. Thus, the damper may be of
any desired length. In view of the stresses on
the elements 25, which are transmitted to the
damper itself and the desirability of constructing
the damper of thin sheet metal, I prefer to make 5
the elements 25 relatively wide so as to avoid
kinking of the damper at the points of connec
tion of these elements thereto.
Mounted for sliding motion on the transverse
strips 12 is a reciprocating element comprising 10
spaced longitudinally extending angle members
26 and transversely extending connecting mem
bers 27 connected at their ends to the members
26 whereby to brace the latter. Pivotally con
nected to the members 26 and to members 28 15
which are secured to the damper immediately
underneath the members 25 are a plurality of
toggle members 29 each of which comprises a
frame work consisting of a pair of links connect
ed together and braced by transverse angle ele- 20
ing means.
ments 30.
In the drawings, the numeral N indicates a
portion of the ‘building defining a ventilating
Attached to two of the elements 21, as will be
clear from Figs. 2 and 3, I provide a connecting ‘
opening.
Attached to the elements [0 in any
_
bar 3| to which I secure a threaded element 32. ‘
25 suitable manner and extending upwardly and toward each other are plates l l which are connected
by spaced transverse strips I2 and bows'l3. The
bows l3 haveportions l4 extending along the elements II and terminating at their lower ends in
30 hooks it? which are adapted to receive struck-out
portions 16 of the ba?ie elements II. The bows
I3 are provided at their upper corners with ?attened portions I8 to which are secured a ridge
Journaled in a suitable bearing 33, carried by 25
one of the strips l2, by a sleeve 34 is a cooperating
threaded element or nut 35 which is’in turn
connected to a tubular member 36, the rotation
Of which, it will be Obvious, imparts longitudinal
motion to the element 32. The tubular element 30
36 is journaled at its left hand end as Seen in
Fig. 2 in a suitable bearing 31 carried by one of
the strips 12. The tube 36 has non-rotatably se
roll l9 and suitable bracing elements 20 and 2|
35 which extend outwardly and position the upper
edges of the baffles IT. The upper edges of the
element II project above the strips l2 and de?ne an opening to be closed. A damper 22 is
cured thereto a sprocket wheel 38 on which is re
ceived an operating chain 39 which extends 35
adapted to close the opening de?ned by the upper
40 edges of the element II and to be moved toward
and from the same by the mechanism about to
be described.
‘
Secured to the bows 13 are brackets 23 to the
lower edges of which and the adjacent portions
46 of the bows l3 are pivoted guide links 24. These
links are pivoted at their lower ends to straps 25
which extend across and brace the damper 22.
As will be obvious from the drawings, these guide
links are placed opposite each other, one pair
50 to each of the supporting bows l3 and a plurality
of pairs of such links are provided along the
length of the damper. Each pair of guide links,
pivoted to their supports and the damper in a
manner to be movable while always remaining
55 parallel to each other, may be termed a parallelo-
downwardly to a position readily accessible to
an operator.
It will be obvious that the damper is moved
upwardly from closed position by motion of the
elements 26 to the left and that it will tend 40
at all times to return under the action of grav
ity to closed position. However, the threaded
element 32 is provided with threads of such
pitch that the action of gravity on the damper
will not serve to rotate the element 35. Thus, 45
the damper will remain in any position at which
it is set by the operator and without the neces
sity of any latching means.
This construction is adaptable to buildings of
any length and may be constructed in sections, 50
if desired. For example, the portion shown in
Fig. 2 may be considered as an operating sec
tion and the portions shown in Fig. 2a may be
considered as supplemental sections and while
they have been shown as of integral construction, 55
2
2,079,576
it is to be understood that the damper may be
made in sections which will not be connected to
gether and that it is only necessary to provide a
connecting means for those portions of the ele
ments 26 making up the reciprocable actuator for
reciprocable element comprising spaced bars hav
each section. It is of course necessary that the
prising similarly spaced links and provided with
section shown in Fig. 2, if made separable, would
have to be provided with a second pair of guide
links 24 and a second actuating portion 29
10 mounted in the same manner as each of the
ing transversely extending bracing bars connect
ing such spaced bars and said screw means be~
ing connected to a plurality of said bracing bars
centrally thereof and said toggle link means com
transversely extending bracing elements connect- '
ing them together.
5. In a ventilator, in combination with means
de?ning an opening to be‘ closed,=a-damper, and 10
means for controlling the motion thereof, said
two half units shown in Fig. 211.
From the foregoing, it will be obvious that I last means comprising a parallelogram guide
have provided a device which is well adapted for 7 means, a reciprocable element movably mount
its intended purpose and while I have shown and ed for motion longitudinally of said damper, tog
described the preferred embodiment, I wish it gle link means actuated by sliding motion of 15
understood that my invention may be realized in vsaid reciprocable element for moving said damp
varying constructions and that I am limited only er to‘and from closed position, screw means for
in accordance with the appended claims and the operating said toggle link means and remote con
prior art.
trol means for operating said screw means, said
Having thus described my invention, what I remote control means including a sprocket car 20
claim is:
ried by said screw means and ?xed to a rotat
1. In a ventilator, in combination with means
de?ning an opening to be closed, a damper, and
means for controlling the motion thereof, said
25 last means comprising a parallelogram guide
means, a reciprocable element movably mounted
able element thereof and a ?exible element car
ried by said sprocket and extending downwardly
to a position accessible to an operator.
6. In a ventilator, in combination with means 25
de?ning an opening to be closed, a damper, and
for motion longitudinally of said damper, tog .means for controlling the motion thereof, said
gle link means actuated by sliding motion of last means comprising a parallelogram guide
said reciprocable element for moving said damp
means, a reciprocable element movably mounted
er to and from closed position, screw means for for motion longitudinally of said damper, toggle 50
operating said toggle link means and remote con
link means actuated by sliding motion of said
trol means for operating said screw means.
reciprocable element for moving said damper to
2. In a ventilator, in combination with means
de?ning an opening to be closed, a damper, and
' means for controlling the motion thereof, said
last means comprising a parallelogram guide
means, a reciprocable element movably mounted
for motion longitudinally of said damper, toggle
link means actuated by sliding motion of said
40 reciprocable element for moving said damper to
' and from closed position, screw means for op
erating said toggle link means and remote con
trol means for operating said screw means, said
reciprocable element comprising spaced bars hav
ing transversely extending bracing barsconnect
ing connected to a plurality of said bracing bars
’
3. In a ventilator, in combination with means
50 de?ning an opening to be closed, a damper, and
means for controlling the motion thereof, said
last means comprising a parallelogram guide
means, a reciprocable element movably mounted
for motion longitudinally of said damper, toggle
link means actuated by sliding motion of said
reciprocable element for moving said damper to
60
means for operating said screw means, said re
35
ciprocable element comprising spaced bars hav
ing transversely extending bracing bars con
necting such spaced bars and said screw means
being connected to a plurality of saidbracing
bars centrally thereof, said remote control
means including a sprocket carried by said screw
means and ?xed to a rotatable element thereof
and‘ a ?exible element carried by said sprocket
and extending downwardly to a position acces
sible to, an operator.
' ing such spaced bars and said screw means be
centrally thereof.
and from closed position, screw means for oper
ating said toggle link means and remote control
.
_
'
45
'7. In a ventilator, in combination with means
de?ning an opening to be closed, a damper, and
means for controlling the motion thereof, said last
means comprising a parallelogram guide means,
a reciprocable element movably mounted for mo
tion longitudinally of said damper, toggle link
means actuated by sliding motion of said recip
rocable element for moving said damper to and
from closed position, screw means for operating
said toggle link .means and remote control means
for operating said screw means, said reciprocable
element comprising spaced bars and said toggle
and from closed position, screw means for op
erating said toggle link means and remote con
trol means for operating said screw means, said
link means comprising similarly spaced links and
reciprocableelement comprising spaced bars and
said toggle link means comprising similarly
elements connecting them together, said remote 60
spaced links and provided with transversely ex
tending bracing elements connecting them to
gether.
.4. In a ventilator, in combination with means
‘ de?ning an opening to be closed, a damper, and
means for controlling the motion thereof, said
last means comprising a parallelogram guide
means, a reciprocable‘ element movably mount
70 ed for motion longitudinally of said damper, tog
’ gle link means actuated by sliding motion of said
reciprocable element for moving said damper to
and from closed position, screw means for op
erating. said toggle link means and remote con
7.5. trol means for operating said screw means, said
provided with transversely extending bracing
control ‘means including a sprocket carried by
said screw means and ?xed to a rotatable ‘ele
ment thereof and a ?exible element carried by
said sprocket and extending downwardly to a
position accessible to an operator.
8. In a ventilator, in combination with means
de?ning an opening to be closed, a damper, and
means for controlling the motion thereof, said
last means comprising a parallelogram guide
means, a reciprocable element movably mounted
for motion longitudinally of said damper, toggle 70
link means actuated by sliding motion of said
reciprocable element for moving said damper to
and from closed position, screw means for oper
ating said toggle link means and, remote con?
75
auras-‘re
‘
3
troi means for operating said screw means, said
necting them together, said remote control means
reciprocable element comprising spaced bars hav
ing transversely extending bracing bars connect
including a. sprocket carried by said screw means
and ?xed to a rotatable element thereof and a
ing such spaced bars and said screw means being
connected to a plurality of said bracing bars
?exible element carried by said sprocket and ex
tending downwardly to a position accessible to 5
an operator.
JAMES H. McDERMENT.
centrally thereof and said toggle link means com
prising similarly spaced links and provided with
transversely extending bracing elements con
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