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Патент USA US3100031

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Aug. 6, 1963
B. SUNSHINE
3,100,026
EXTENDIBLE LADDER TOP SUPPORT
Filed June 27, 1960
2 Sheets-Sheet 1
I
30
Aug- 6, 1963
B. SUNSHINE
3,100,026
EXTENDIBLE LADDER TOP SUPPORT
Filed June 27, 1960
2 Sheets-Sheet 2
INVENTOR
BENJAMIN SUNSHINE
United States Patent O ”
1
3,100,026
Patented Aug. 6, 1963
2
support structure atop ladder and extended across a wide
3,100,026
window area.
EXTENDBLE LADDER TOP SUPPORT
FIG. 2 is a perspective illustration of the ladder sup
port of FIG. l, as viewed from its front wall support side,
in its extended mode.
Benjamin Sunshine, 50 Maxwell Ave., Fords, NJ.
Filed lune 27, 1960, Ser. No. 38,795
2 Claims. (Cl. 182--214)
FIG. 3 is a perspective illustration of the support, as
seen from its front side, in collapsed condition.
ticularly relates to novel ex-tendible top supports for lad
-FIGS. 4 through 9 are illustrations of detail portions
ders and the like, combining compactness, lightweight,
of the exemplary ladder to support of FIGS. l, 2 and 3.
a work bench area, and safe extended support.
10
FIG. 10 is a cross-sectional view along the line 10h-10
When an ordinary straight ladder is inclined against
of FIG. 1 to illustrate the main automatic support adjust
a wall, its two tip ends provide a “two point” contact of
ment.
very small area. Such concentrated pressure points often
FIG. l1 is an end view `of the support structure, partial
kink or dig holes into aluminum shingles, crack asbestos
ly broken through, in its extended condition as in FIG.1,
shingles, and fail to properly grip against masonry walls. 15 illustrating the angular «adjustment of the support exten
Also, they fail 'to suitably support the ladder for con
sions.
This invention relates to ladder supports, land more par
venient working across a reasonably wide window area.
Referring to FIG. l, the invention top ladder support
Finally, when the ladder is supported directly against a
structure 15 lis illustrated in its extended mode across a
vertical wall, a painter or carpenter must mount his tools
and materials below the ladder top, and has to incon
veniently stoop to use them.
In accordance with my present invention, I provide a
relatively wide window 16 of a house. The structure
15 is fastened to the top ends of a ladder 17 that is
inclined for use against the house wall.
Ladder 17 is a
straight type, and may be an extension ladder the top
end of which is adjusted lto the work height desired.
top ladder structure, readily mountable on its extending
ends, and having forward flat sides that automatically
The ladder top ends are fastened to structure 15 by
adjust against the wall surface to support the ladder stably 25 suitable interior clamps 18, 18 thereof. Thumb screws
in its inclined position. Substantial surfaces of the for
or nuts are used to fasten the ladder ends with short
ward sides prevent injurious pressures against any wall,
transverse interior bars 19, see FIG'. 10. Horizontal
and hold firmly and safely against displacement. A pair
slots permit ready `adjustment for different ladder widths.
of independent arms are folded outwardly into the front
A pair of shiftable transverse flat ribs 21, 21 are con
wall plane, for spanning wide windows across which one 30 tained between each of the corresponding bolt clamps 18,
may desire to work. A person can thus support the lad
18 that are pressed against the sides of the ladder ends,
der directly at a window area with the invention support,
as clearly seen in FIGS, l and 10. The clamping
to repair, paint, hang up screensÀ or awnings, etc.
assembles 18, 18 are thereby bolted together after the
The ladder top structure hereof also contains a sub
ribs 21, 21 are astride both respective ladder ends, and
stantial horizontal Work bench in which tools, brushes, 35 the assemblies are in turn in position for the particular
cans of paint, etc. can be stored for use in safey at ‘the
ladder end separation. The bolted assemblies 18, 18 are
ladder top.
also thereby secured with the main structure cross-beam
This affords a convenient and etlicient working arrange
20. A ñange 20" extends substantially across the flat
ment. A semi-circular cut-out between the front support
beam 20. The ladder top tips abut flange 20'l as shown
surfaces of the invention structure permit using the ladder 40 in FIG. 10; when the support 15 is in position thereon.
directly against any round objects, as a poll, tree, rain
The ladder support structure 15 is constructed with
leader; or even Kapplied against the corner of -a building.
the cross-beam 20, and two side arms 22, 22 extending
'I‘he ladder structure hereof is sturdy, rugged, lightweight,
from its ends as a rectangular frame, in U-form. Two
collapsible and readily mountable and demouted from the
tubular rods 23, 23 each have one end anchored in a
45
ladder top. It is convenient and useful, and permits one
side arm 22, 22, and extend through apertures in the ribs
to perform more safety and efficiently o-n a ladder top
21, 21. Rods 23, 23 are coaxial, and are parallel to the
cross-beam 20. A central apron or platform 25 is secured
at one end from cross-beam 20, transversely, and in the
than heretofore possible.
It is accordingly `an object of the present invention to
provide a novel top ladder support structure.
upper plane of the structure 15. The adjacent ends ofl
Another object of the present invention is to provide 50 rods 23 are fastened with uprights at ñxed platform 25
a novel foldable, light weight, rugged top ladder support.
for mutual rigidity. Platform 25 has a central opening
A further object of «the present invention is to provide
26 into which is ñtted a wire cross-frame 27. A can of
a -novel ladder support that has lwall contact areas of sub
paint or other material is thus readily supported in the
stantial size, and extendible arms to further enhance the
platform 25, which is in a substantially horizontal posi
55 tion when in use on the ladder top.
support possibilities for the ladder.
Still another object of the present invention is to
An important feature of my present invention are the
provide a novel ladder top support structure with a hori
front support plate set 30, 31 and their companion ex
zontal top work bench.
tension plate set 40, v41. Support plates 30 and 31 are
Still a further object of the present invention is to pro
vide a novel ladder top suppor-t with a cut out front sec
respectively4 tiltably mounted on the rods 23, 23 as de
60 scribed in detail hereinafter. They are arranged to auto
tion to subtend protruding objects as a pole, pli-pe, etc.
matically adjust their outer planar surface to press onto
These and further objects of the present invention will
become more apparent from the yfollowing description of
the ñat wall against which the ladder 17' is supported.
Each support plate 30, 31> is arranged to be individually
and automatically adjustedr to the proper “flush” angle to
an exemplary embodiment thereof, illustrated in the draw
ings, in which:
FIG. 1 is a rear perspective illustration of thev exemplary
65
press a maximum of its substantial surface area against
the building wall. The rangeof such angular adjustment
3,100,026
v
0
,
may be made considerable, as indicated by dotted lines
a land I1 in FIG. l0, more than required in most practical
fastened centrally of the plate 40 interior. A slide mem
ber 44 is connected with rod 46 by depending sides 44',
uses.
44' apertured over rod 46. Member 44 is thus both
angularly displaceable about rod 46 and slideable across
i-t. The pivoted arm 42 is hinged at its section 50 to
'Iihe extension support plates 40, 41 are respectively
hinged at one end to the bearingabrackets ‘32, 33 4‘by hinge
hinge 51.
sets »34, 35. When extended as in FIGS. 1 and 2 and 4
the extension support plates 40, 41 are thus placed in co
planar relation with :main support plates 30, 3d. Hinged
FIGS. 7 and 8 are full-face enlarged views of the
bracket arm assembly 43 -to illustrate the exemplary con
bracket arms 42, 43 respectively couple to extension plates
struction thereof (and of its counterpart 42). FIG.
40, y41 through bearing-.brackets 44, 45. Bearing-brack 10 8 is a view of the bracket arm 42 fully extended as in
ets 44, 45 are pivotally mounted on respective transverse
rods 46, 47 ailixed to and across the plates 40, 41. More
FIG. 1. FIG. 7 is a view of vthe extended bracket arm
43 as seen from the rear of FIG. 8. Bracket arm 43 is
detailed description of the extension plate assemblies 40,
41 is presented hereinafter. The extension plates 40, 41
62. An auxiliary pin 63 through overlapping edges of
constructed of two arms 60, 61 pivoted at central hinge
are thereby enabled to be extended as in FIGS. l and 2
iny the plane of main support platesk 30‘, 61 for traversing
arm 61 further secures the pivoting arm construction.
Hinge 64 secures arm 60 to slide-rotate bracket 45 on
a Wide gap as a Window area; or be retracted as shown
rod 47 (in plate 41), see FIG. l. Hinge 65 at end of
in FIG. 3. Such extension is rigidly held, and readily
arm 61 fastens to 'the side arm 22 of the frame.
FIG. 9 is a perspective view of the bracket arm 42
set-up when in use on a ladder top.
The support plates 30, 31 and 40, 41 preferably have 20 partially extended from the assembly frame 20, 22. The
a noughened or friction material layer on their outer faces
that contact the vertical building surfaces. The use of
slidev bracket 44 and rod 46 corresponds to that also shown
in FIG. 6 on extension plate 40. Hinge 52 centrally
felt, rubber, plastic, cork, etc. is optional for this purpose.
joins arm 50 to arm 53. Arm 53» in turn is hinged to
side 22 of the assembly. FIGURE 9 also applies, in
In view of the relatively large contact support areas of
the surfaces 30, 3K1 or 40, 41, material with even a small 25 symmetrical fashion to bracket arm 43 and plate 41, as
will be understood by those skilled in the art.
coeñ'icient of friction will sulìice for most uses. 'llhe
The invention construction accordingly is seen to ac
distributed pressure will not mar thev vertical surface
against which the structure plates are pressed.
complish lthe novel, useful and significant results afore
said. The extension plates 40‘, 41 are thereby independ
When in the collapsed mode per FIG. 3, only the inner
ently suspended from the frame 20, 22, and are angularly
basic support plates yare used, and the ladder is held stable
positionable with respect to the frame. The angular
upon the plates l30, 31 adjusting to the Wall angle, per
movements of extension supponts 40', 41 and their position
FIGS. 1 and 10. Where a gap is to be subtended, as the
is independent of that of plates 30, 31. Also the plates
window 16 of PIG. 1, the extension plates 40, 41> are un
40, 41 are independently retracted, or extended for full,
folded, extended as illustrated. 'Ilhe brackets 42, 43 hold
the plates 40, 41 firmly and stably, in line with plates 35 firm support. When retracted, as shown in FIG. 3, a
small package for ‘transporting or storage results. Further,
3_0, 31. The support extensions 40', 41 press against the>
Window frame 16’ to hold the ladder 117 therebetween,
‘thel bracket larms 42, 43 are readily extended or re-.
in an effective w10rk position. The extension plates 40,
tracted, and latch out firmly, when extended, for safe
support.
41 are free to pivot into the proper stable angular relation
Although the invention has been illustrated with an
for the set-up ladder, as indicated by dotted lines c and dv 40
exemplary embodiment, it may take other forms and
in PIG. l1.
constructions as will now be understood by those skilled
FIGS. 4, 5 and `6 illustrate the exemplary construction
in the art, falling Within the broader principles and scope
of the related support plates ‘30, 40; being the sarne in
of the invention as set forth-in the following claims.
symmetrical yarray for plates 31, 41, As described here»
l claim:
inabove, the cross rods 23 are supported in the fixed 45
1. A ladder top support comprising a planar frame with
single-axis pivot means extending across the frame along
one edge region thereof, plate means pivotally mounted
frame assembly, namely between outer frame members
22` and the center apron 25. FIG. 4 is a separated per
spective view to illustrate the method of juncture of the.
adjacent though independent plates 30! and 40.
Tlie
plate 30 pivots on rod 23, as to be described in connec
tion with FIG. 5. A U-bracket y32 has its two parallel
50
'with saidpivot means along said edge region angularly
displaceable solely on the single axis, for coacting with
a vertical surface, extension plate means hinged to each
side of said plate lmeans and arranged to pivot on the
sides straddling the rod 23, with apertures for pivoting
said single axis when extended to coact with the vertical
about the rod. Hinges L34, 34 atthe base of bracket 32
join the adjacent edge 40’ of the extension plate `40 to the 55 surface to support the frame and an attached ladder
«across a gap in the vertical surface, an individual fold
bracket 3-2.
able bracket connecting said frame and each of said ex~
FIG. 5 is an edge elevational View, partly broken
tension plate means for extension and retraction-thereof,
away, of the plate sections (30, 40) of FIG. 4, in hinged
and slideable pivotal rneans coupling each of said fold
relation. FIG. S clearly illustrates the support of rod
23 by an end aperture, in frame member 22. An angle 60 able brackets and its associated extension plate means
whereby each extension plate .means is angularly adjust
fixture 48 fastened to plate 30 holds the platte 30 to rod
able against the vertical surface for effective support
23 »thereat The end flange 30' of plate 30 also is secured
action.
with rod 23. The U-braeket 32 has apertures about rod
2. A ladder top support comprising a U-frame withv
23, and pivots on they rod. Its tip ends 32’ do not ex
tend to plate 30 in order not abut it, and thereby pivot 65 pivot elements extending along a single axis at the tip of
each U-'frame arm, means for fastening the ends of a
on rod 23 independently of plate 30. The extension.
ladder top to the central section of said U-frame, a plate
plate 40 has a depending end portion 40’ secured with
member pivotally mounted with each of said pivot ele
hinge 34. IPlate 40 is thus independently Iangularly
ments angul-arly ydisplaceable on the single axis for co
movable with respect to both plate 30! and the support
frame 20, 22, and yet remains iirmly supported and 70 acting with a vertical surface to support the U-frame and
the ladder, an extension plate member hinged vto each
secured toI the assembly 15.
of said plate members and arranged to pivot on the said
~ FIG. 6 illustrates in perspective the exemplary method
single axis When extended to coact with the vertical
of securing the opposite end 40" of extension plate 40
surface to support the frame and ladder across a gap in>
into the assembly :15. The longitudinal rod 46 is mounted
the vertical surface, an individual foldable bracket con
between depending plate, end 40" and an angle piece 49 75 necting said fra-me and each of said extension plate mem`
3,100,026
5
bers `for extension and retraction thereof, land slidable
pivotal means coupling each of said foldable brackets and
its associated extension plate member whereby each eX~
tension plate member is angularly adjustable against the
vertical surface for eiîective support action.
References Cited in the íìle of this patent
UNITED STATES PATENTS
1,015,123
Bauer ________________ __ Ian. 16, 1912
6
1,151,809
2,008,582
2,327,317
2,506,351
2,680,554
2,808,975
2,934,163
Morgan _____________ __ Aug. 31, 1915
Fredriksen ____________ __ July 16, 1935
Randaìl _____________ __ Aug. 17,
Otterson _____________ __ Apr. 11,
Dakin ________________ __ June 8,
Palmquist ______________ __ Oct. 8,
Ladewski _____________ __ Apr. 26,
1943
1950
1954
19‘57
1960
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