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Патент USA US2126258

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Aug. 9, 193%.
`
.,x.y w. HOLMAN
”
DCCR CLOSER _AND CHECK.
Filed March 30, 1957
33
/J
30
\
@Me-6' W' Hamm/v
INVENTOR-
Patented Aug. 9, 1938
2,126,258'
V UNITED srarss PATENT OFFICE
.
2,126,258
DOOR CLOSER AND CHECK
l
.lames W. Holman, Oklahoma City, Okla.
Application March 30, 1937, Serial No. 133,785
6 Claims.
Thisinventionrelates to combination door closers
and checks, and aims to provide a simple mecha
nism which may be adapted for use on any type
door, including automobile doors.
The chief object of the invention is to provide
such a'device which is capable of being installed
above the door head and between the two upper
members of the door frame, thus rendering the
working mechanism of the device invisible.
Other objects of the invention are to provide
a device of this class which of simple yet dura
ble design; which is provided with readily acces
sible `means for timing the closing of. the door;
which may be easily installed or removed from
15 its hidden position above the door; which in
cludes a simple means for holding the door open
in any desired position; which not only checks
the closing of the door but closes it firmly and
completely; which utilizes a coil spring with di
20
rect pull as the force for closing the door, thus
eliminating the spiral torsion springs now used
generally, and which break frequently; which
eliminates the side tension on the door closing
«armV which on present door closers break fre
duently and add to maintenance cost; which has
greater closing leverage than door closers of
present design; which includes a simple means
of adjusting the spring tension, the cylinder oi.
30 which may be easily and quickly reñlled with
fluid without the necessity of dissembling and
reassembling the complete device, and without
removing the device from its -installed position.
Other objects of the invention will be fully
understood from a consideration of the following
detailed description when read in connection with
the accompanying drawing which forms a part
of this application. The drawing is to be con
only portions of the device which are visible
after the device has been installed.
Numeral 6 designates as a whole a hydraulic
cylinder which is provided with a piston chamber
'l and a by-pass duct 8 and ports 9 and I0 which 5
provide intercommunication between the cham
ber 'I and the duct 8 at their adjacent ends. The
piston comprises a hollow body II having a large
interiorly threaded bore at one end and a smaller
interiorly threaded bore at the opposite end. The 10
piston carries at its forward end a cup-leather I 2,
or any other type sealing ring, held in position by
a common washer I3 and by a valve nut I4 which
has 4a central bore which is provided at its inner
end with a valve seat. A piston rod I5 is provided
with a conical end which forms a valve I 6 adapted
to seat on the valve seat at the interior end of
the nut M. The rod I 5 slides through a ring Il
which is exteriorly threaded to fit the large bore
end of the piston, and which is provided with a 20
plurality of through ports I8. Adjacent the valve
I6 the piston is provided with a pin I9 which
serves to seat one end of a spring 20, the other
end of which seats on the ring I l. The spring,
which surrounds the inner end of the rod, thus
serves to normally keep the valve i8 seated on
its seat within the piston. The chamber 'I is
provided with a usual bearing nut 2l which in turn
is provided with a packing gland 22 and a Vpack
ing gland nut 23 through which the piston rod
I5 is slidable. At the same end of the cylinder
in alignment with the duct 8, the cylinder carries
a packing gland nut 2li and gland 25 through
which a valve 26 is threadedly adjustable, and
which serves to alter the passage area of the port
Il? and of the duct 8.
The cylinder 5 is also provided with a pivot
bracket 5l) and a spring bracket 21. The bracket
In the drawing:
26 serves to pivotally mount the cylinder at any
40
Figure l is a top plan view of._ the device in v desired point to the door frame, and may be lo
stalled above the door head and within the two cated at the end of the cylinder instead of at
upper members of the door frame;
'
the side as shown. The rod I5 is of any desired
Figure 2 is a side elevation of the device in length depending on the width of the door. 'I‘he v
rod carries on its outer end a door closing arm,
section showing the details of the piston and cylin
designated as a whole by the numeral 28.
der construction;
.
m
.
45
Referring to Figure 3, the arm 28 includes a
Figure 3 is -a side perspective view of the door
sidered illustrativeand not restrictive.
closing arm showing particularly the ratchet teeth
for holding the door open;
Figure 4 is a detailed perspective view showing
the manner of mounting the dog which contacts
the ratchet teeth on the door closing arm, the
dog being shown in section; and,
Figure 5 is a perspective view of a portion of a
55
door and its frame, and shows particularly the
spring bracket 29, a centrally bored body member
3l) through which the rod I5 is adjustably slid~
able, and is rigidly positioned with relation there
to by the set screw 3|. The arm also includes
an arcuate member 32 the outer end of which
is perforated for pivotal attachment to a pin 33
carried by any suitable door bracket 3Q, The
arm 28 also includes an integral toothed mem
ber 35 which may extend from the body portion
2,126,258
2
` 30 at any desired angle, and which carries a plu
rality of ratchet teeth 36 on its nether surface,
which teeth may be arranged parallel to each
other or may be arranged in fan shaped relation
as desired. A normally contracted spring 31 has
one of its ends suitably secured to the bracket 21
on the cylinder, as shown in Figure 1, and has its
other end suitably secured to the bracket 29 on
the arm 28. The means for securing the ends
of the spring to these two brackets 21 and 29 are
template mounting a plurality of brackets 45
and 46 through which a rod 41 is slidable ver
tically. On the upper end of the rod 41 is suit
ably secured a dog 48 which has a chisel-like
upper edge as shown in Figures 1 and 4, and
which upper edge is adapted to seat between any
two of the ratchet teeth 36. A suitable opening
must, of course, be provided through the door
preferably adjustable longitudinally so that the
spring tension may be adjusted easily from either
end of the spring. The spring serves as the door
closing force and also serves to urge the piston
head 44 to permit free vertical movement of the
dog 48. The teeth 36 may, of course, extend any 10
desired -distance along the arm 28. When the
door is opened the rod 41 may be pushed upward
manually into contact with the teeth 36 with the
toward the far end of the cylindergagainst the
resistance of the hydraulic- fluid which I con
template using in the cylinder.
With the device installed as shown in Figure l
the arcuate member 32 passes through one upper
20 frame member 38 of the door frame through a
slot 38 which for the sake of appearances is
surrounded by a slotted plate member 4D, and
its outer end is pivotally secured to the door 4|
as previously described. rThe tension on the
spring 31 is adjusted and the -valve 26 is adjusted
so that the speed of the door in closing is as
`an
desired.` As the door is opened the arcuate mem
ber 32 travels with it, and the entire structure
pivots about the` pin 42 carried by the bracket
43. This causes thel rod I5 to slide outward from
the interior >of the chamber 1, the spring 26 is
contracted, the valve I6 is vunseated, and the hy
draulic fluid behind the piston is permitted to
pass through the ports I8 andl through the cen
bore of the valve nut I4, as well as through
3,5 tral
the port III, the duct 8, the port 9, and into the
other end of the chamber 1.
When the door is
released the spring >31 being `extended tends to
assume its normal contracted position and causes
the door to move `toward a closing position, and
also causes the rod I5 to slide back into the
chamber 1. ’I'his action reduces the tension on
the spring 2D, permits the valve .I6 to seat, clos
ing the central bore of the nut I4, and thus moves
piston toward the other endA of the cylinder.
4,5 the
The fluid ahead of the piston is forced through
the port 9, the duct 8, and the port I0 back into
the other end of the chambery 1. With this ar
rangement the rpassage area afforded the hy
draulic fluid is greater during the door opening
travel of the'piston than during its door closing
travel. VThus there is no resistance to the open
ing of the door, but the slower travel of the iluid
during the closing` movement of the door nat
urally prevents the door from slamming.
It will readily be seen that the distance from
the pivot point 33 perpendicular to the axis of
the rod I5 may be increased or decreased as de
sired without effecting the principle of the inven
60 tion. With this arrangement a rconsiderable
leverage is obtained andthe closing force of the
spring31 may be considerably increased -over its
straight pull. It may also be Yseen that the actual
pivotalrnovement of the entire device around the
65 pin 42 will be very small and thatthe device may
therefore be installed in a very narrow space
such as the space between,V the outer panels of
an automobile door frame. While it has not been
shown in the drawing, I contemplate, as a mat
70 ter of convenience„mounting at least a portion
of `the door head 44 on hinges at one end, so that
adjustment of the valve 26 or of the yspring 31
may be easily accomplished.
l On the surface> of the upright member of the
75 door frame towhich the door is. hinged I con
door in any desired position. The release of the
door at the desired point causes the chisel-like 15
upper edge of the dog 48 to seat on the teeth 36
thus preventing any movement of the arm 28,
the rod I5, or of the door 4I toward their normal
positions. When it is desired to close the door
a slight opening movement is sufficient to unseat
the dog 48 thus permitting the dog and its rod
41 to move by gravity out of the path of travel
of the teeth 36. This release naturally permits
the door to close normally.
While I have described and illustrated a speciñc 2,5
embodiment of my invention I'am aware that
numerous alterations and changes may be made
therein and I do not wish to be limited except
by the prior art and the scope of the appended
30
.
I claim:
1. A door closer and check comprising: a
cylinder; a hollow piston having a valve seat
surrounding an opening in one ofr its ends, and
slidable within the cylinder; a piston rod ex 35
claims.
tending within and without the cylinder, its in
terior end forming a valve for seating on said
seat; a coil spring within the piston normally
urging said valve to remain seated; through ports
in the otherV end of the piston; a bypassl afford 40
ing communication between opposite `ends of
the cylinder around said piston; a door closing
arm adjustably mounted on the exterior end of
said piston rod, its point of connection to the
door being offset with relation to the axis of 45
said cylinder and piston rod; and a coil spring
adjustably connected exteriorly to said cylinder
and said door closing arm for urging said arm
and said rod toward the far end of said cylinder.
2. In a door closer and check, the combination
with a fluid cylinder, a piston and rod- there
for, and means for controlling the speed at which
said piston may travel from one end of said
cylinder to the other, of: a door closing arm
having one of its ends rigidly and adjustably
secured to the exterior portion of said rod, and
having its other end formed for pivotal con
nection to a door, and offset with relation to
the axis of said rod; and an extension spring
outside the cylinder for normally urging the rod 60
andV piston toward the far end of the cylinder.
3. A device of the class described comprising:
a cylinder having pivotal mounting means at one
endya piston slidable in the cylinder; a rod for
the piston protruding from the other end of the
cylinder; spring means connected to the exterior
of the cylinder and to the rod for urging the pis
ton and rod toward the far end of the cylinder;
and a door closing arm rigidly connected at one
end to the piston rod and adapted to have its 70
other end pivotally connected to a door, the door
connecting end being offset with relation to the
axis of said rod.
4. A door closer comprising: a cylinder having
pivotal mounting means‘at one end, a piston 75
.2,126,258
within the cylinder, a rod for reciprocating said
piston extending exteriorly through the opposite
otherwise closed end of said cylinder, means for
controlling the speed at which fluid may travel
from one side of said piston to the other side
Within the cylinder; a door closing arm having
one of its ends rigidly connected to said piston
rod exterior of said cylinder, its free end lying
at an angle to the axis of said rod, and adapted
10 to be pivotally connected to a door; and a spring
connected exteriorly to said cylinder and to said
door closing arm for urging the door to a closed
position and for urging said piston toward the
pivoted end of said cylinder.
15
5. The combination with a door, a door cas
ing, a fluid cylinder pivotally mounted at one of
its ends within and hidden by the door casing, a
piston for the cylinder, a rod for the piston ex
tending exteriorly through one end of said cylin
der, and adjustable means `for controlling the
speed at which said piston may travel from one
end of said cylinder to the other, of: a door
closing arm having one of its ends rigidly secured
to said rod, extending at an angle to the axis
25 of said rod through a slot in said door casing,
and having its opposite end pivotally connected
3
to said door; and a spring connected to said cyl
inder and to said arm within said door casing,
and adapted to urge said door toward a closed
position.
6. The combination With a door, a door cas
ing, a iiuid cylinder pivotally mounted at one 5
of its ends `within and hidden by the door cas
ing, a piston for the cylinder, a rod for the pis
ton extending exteriorly through one end of
said cylinder, and adjustable means for con
10
trolling the speed at which said piston may travel
from one end of said cylinder tov the other, of:
a door closing arm having one of its ends rigidly
secured to said rod, extending at an angle to the
axis of said rod through a slot in said door cas
ing, and having its opposite end pivotally con~ 15
nected to said door; ratchet teeth carried by
said arm; a dog movably mounted on said door
casing and manually engageable with said teeth
for maintaining said arm in a desired position 20
with relation to said door casing; and a spring
connected to said cylinder and to said arm with
in said door casing,4 and adapted to urge said
door toward a closed position.
JAMES
HOLMAN.
25
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