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- Sept.- 10’ 19-46.
'LADDER SUPPORT
'
Filed July 28. 1944
a.
2,407,575
Patented Sept. 10, 1946
UNITED STATES PATENT OFFICE‘
2,407,575
LADDER SUPPORT‘
Joseph D. Ramsey, Watertown, Mass‘.
Application July 28, 1944, Serial No. 546,980
4 Claims. (Cl. 228-61)
1
This invention relates to supporting devices
and more especially to a support for maintaining
a ladder in an inclined position without slipping.
An object of the invention is to provide an im
proved support, and more especially to devise a
ladder support which is adapted to maintain the
2
Considering the ladder support more in detail,
numeral l denotes a suspension member and nu
meral 2 indicates a gripper member pivotally at
tached at both sides of the suspension member I
by means of a pin 3. The suspension member I
preferably consists of a hollow block formed with
lug portions 4, through which passes a pin 5.
lower ends of a ladder in a ?xed position while
The lugs 4 and pin 5 are adapted to .pivotally
the latter is held in an inclined position. An
support an end of a ladder 6 in suspension be
other object of the invention is to maintain a
ladder in a ?xed position by means which are 10 tween the forward and rearward leg portions of
the‘ support, constituted by the suspension mem
actuated by a weight supported on the ladder and
ber and gripper member respectively, with the
which increase in effectiveness as such weight
point of suspension of the ladder end preferably
being located between the gripper member 2 and
15 the pivotal point of attachment of the gripper
simply operated ladder support.
member to the suspension block, as denoted by
The nature of the invention and its objects will
increases. Another object of the invention is to
provide a simple, cheap, light, easily installed and
be more fully understood from the following de
scription of the drawing and discussion relating.
thereto.
In the accompanying drawing:
Fig. 1 is a view in side elevation illustrating a
_ ladder in an inclined‘position with my improved
the pin 3. .
The gripper member 2_ is formed with sides ‘I
which enclose the suspension block I, as may be
better seen in Figs. 1 and 2.
8 denotes a pair of
spaced apart, upwardly extending arms integral
with the gripper member and terminating in
curved ends 9, presenting concave edges Ill. The
susp'ension‘member I is likewise provided with a
Fig. 2 is a view in front elevation further illus
pair of spaced apart, upwardly extending up
trating the ladder support in an operating posi
rights ll, having extremities [2 formed with
tion.
convexedges I3, adapted to engage against the
Fig. 3‘ is a cross section taken on the line 3-3
concave edges H! of the ends 9, at a point directly
of Fig. 2;
above the point of suspension of the ladder end in
Fig. 4 is a view in side elevation fragmentarily'
illustrating a ladder and a modi?cation of ladder 30 the suspension block. The edges of the ends. 9
and l l are preferably arranged to contact as near
support attached thereto;
ladder support attached thereto.
Fig. 5 is a detail cross sectional view illustrat
ing another modi?cation of the invention; and
Fig. 6 is a view in side elevation illustrating a
modi?cation.
The invention generally includes a ladder‘sup
port made up of a suspension block and a gripper
member pivotally secured at the sides of the sus
their tips as possible when the legs move apart
as a weight is thrown on the ladder.
The bottom surface of the suspension block I
is formed with roughened edges I4 and the bot
tom surface of the gripper member 2 is likewise
provided with roughened edges l5 which further '
aid in causing. the support to cling to a support
pension block. The suspension block constitutes
ing surface.
a pair of forwardly extending legs of the support 4:0
In operation, a pair of the ladder supports are
and the gripper member constitutes a pair of
preferably utilized. The bottom ends of the lad
rearwardly extending legs. The suspension block
der 6. are attached in the suspension blocks by in
is formed with a pairvof spaced-apart lug portions
serting between the lug portions 4 and fastening
through which extends a pin adapted to support
with the pins 5 which pass through an opening in
an end of a ladder in suspension between the 45 the ladder. Thereafter the ladder is ready for
front and rear legs. The suspension block and
use and is placed in an inclined position against a
gripper member are further formed with up
wall or other desirable support, and a weight is
applied thereto, as for example by the operator’s
which are adapted to be brought into contact
with one another at a point immediately above 50 standing on the rungs of the ladder.
The weight thus applied is transmitted through‘
the point of suspension of the ladder end between
the ends of the ladder to the upwardly extending
the legs. There is thus developed a leverage by
uprights of the suspension block, and thence
which increased pressure is transmitted through
through the ends 9 of the gripper member. The
the gripper member to a supporting surface for
55 pressure thus applied on the gripper member
the ladder at a point rearwardly thereof.
wardly extending uprights and arms respectively,
2,407,575
3
tends to force it vertically downward against the
supporting surface 16.
.
There is thus afforded a leverage which greatly
increases the ability of the gripper member to
cling to the supporting surface l6, and which pre
vents the end of the ladder from being displaced
with respect to the supporting surface Hi.
In Fig. 4 I have illustrated a modi?cation of
the invention which essentially consists of a suc
4
.
arms spaced apart and formed with curved. bear
ing surfaces which lie in contact with the upper
ends of the curved edges of the block uprights,
said block uprights and gripper arms adapted to
provide a. leverage for increasing vertical pres
sure of the gripper member against a supporting
surface.
2. As an article of manufacture a ladder sup
port for maintaining a ladder in an inclined po
tion gripping means I‘! adapted to take the place 10 sition, said support comprising a suspension ele
of the roughened surface l4, appearing in Figs.‘
ment and a gripper member pivotally attached
1-3 inclusive. For some applications of the lade
to the suspension element, said suspension ele
der support, as for example in connection with
ment presenting forwardly extending legs of the
supporting surfaces which are of a smooth char
ladder support, said gripper member presenting
acter, such as sidewalks and the like, special
rearwardly extending legs of the support, means
types of friction means may be desired to be em- ‘ in the suspension element for pivotally securing
ployed in connection with the gripper members. I an end of the ladder in‘ suspended relation be
Various other changes may be resorted to, as for
tween the forward and rearward extending legs,
example that noted in Fig. 5, in which I have
upwardly extending spaced apart uprights inte
shown a set screw l8, adapted to be advanced
gral with the suspension element, upwardly ex
through the base of the ladder support to aiford
tending arms integral with the gripper member,
another type of friction means. Other arrange
ments of a similar nature may also be resorted
to.
In Fig. 6 I have illustrated a further modi?ca
tion consisting of links 22, 23 and 24 which may
be used in place of the members 12 and 8 if de- ,
sired. The links are pinned together and may
be provided with adjustable means for furnish
ing different spacings of the supporting links _
from one another and from the ladder.
The principal advantages of the ladder sup
port of the invention are its lightness, cheapness,
ease of installation, and positive operation by
said arms and uprights adapted to be brought in
to contact with one another at a point above the
point of suspension of the end of the ladder in
the suspension element, thereby to exert a lever
age through the gripper member to prevent dis
placement of the ladder rearwardly.
3. As an article of manufacture a ladder sup
port comprising a hollow suspension block,
means for pivotally securing one end of a ladder
in suspension in the block, a gripper member
having sides pivotally fastened to the suspension
block, said gripper member being formed with
which terminate in curved ends, a sec_
which greater security in placing a ladder in an 35 uprights
ond pair of uprights extending forwardly from
inclined position may be achieved. The device
the suspension block and lying in contact with
may be very easliy removed when so desired, and
the curved ends at a point above the extremity of
adds very little to the weight of the ladder, while
the ladder, said gripper member presenting a
interfering in no way with moving the ladder
base adapted to extend rearwardly beyond the
about in an‘ upright position.
While I have shown a preferred embodiment
of my invention, it should be understood that
various changes and modifications maybe re
sorted to, in keeping with the spirit of .the inven
tion as de?ned by the appended claims“.
end of the ladder and to receive pressure trans
mitted through the uprights of the suspension
block and gripper member respectively.
4. As an article of manufacture a device for ‘
maintaining a ladder in an inclnined position,
45 said device comprising a hollow suspension block,
I claim:
means for pivotally securing one end of the said
1. As an article of manufacture a ladder sup
ladder in a suspended position in the block, said
port for maintaining a ladder in an inclined po
block further including a pair of upwardly ex
tion, said support comprising a hollow suspension
tending arms through which an end of the ladder
block adapted to constitute forward.- legs of the
passes, said arms being formed with curved end
said support, a gripper member pivotally at;
portions, said block further including a base hav
tached at either side of the block, said gripper
ing a roughened gripping surface, a gripper
member adapted to provide rearwardly extend
member extending rearwardly of the. suspension
ing legs of the ladder support, spaced-apart lug
portions projecting rearwardly from the suspen
sion block, pin means for {holding an end of the
said ladder in a suspended position between the
block and pivotally fastened at the outer sides
thereof, said gripper member presenting a second
gripping surface lying inthe same plane as the
said ?rst gripper surface, a pair of uprights hav
ing curved bearing surfaces adapted to lie in con
tact with the said curved ends of the arms,
lug portions, said block furtherincluding a pair
of upwardly extending, spaced apart uprights,
the extremities of the uprights being formed 60 thereby to transmit pressure on the ladder to
with curved edges which occur at points directly
the second gripping surface.
‘
abovethe point of suspension of the ladder end,
said gripper member having upwardly extending
JOSEPH D. RAMSEY.
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