U.S. patent application number 12/619993 was filed with the patent office on 2010-05-20 for scaffold elevator.
Invention is credited to Peter KOREVAAR.
Application Number | 20100122872 12/619993 |
Document ID | / |
Family ID | 42171112 |
Filed Date | 2010-05-20 |
United States Patent
Application |
20100122872 |
Kind Code |
A1 |
KOREVAAR; Peter |
May 20, 2010 |
SCAFFOLD ELEVATOR
Abstract
An elevator for use by masons with a scaffold structure. A group
of lifts are arranged in horizontally spaced relation. Each lift
includes a rail secured to the scaffold structure, a shuttle
movable along the rail, a winch mounted to the shuttle, and a cable
running from the scaffold top to the winch. Decks are supported by
the shuttles to provide intermediate working platforms. Benches are
supported by the shuttles for storing materials.
Inventors: |
KOREVAAR; Peter; (Cookstown,
CA) |
Correspondence
Address: |
YOUNG BASILE
3001 WEST BIG BEAVER ROAD, SUITE 624
TROY
MI
48084
US
|
Family ID: |
42171112 |
Appl. No.: |
12/619993 |
Filed: |
November 17, 2009 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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61115158 |
Nov 17, 2008 |
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Current U.S.
Class: |
182/113 ;
182/112; 182/129 |
Current CPC
Class: |
E04G 5/16 20130101; E04G
5/00 20130101; E04G 2005/008 20130101; E04G 5/06 20130101; E04G
1/20 20130101 |
Class at
Publication: |
182/113 ;
182/129; 182/112 |
International
Class: |
E04G 3/30 20060101
E04G003/30; E04G 3/32 20060101 E04G003/32 |
Claims
1. An elevator system for use by a mason with a scaffold structure,
said elevator system comprising: lifts which, in use, are disposed
in a group and secured to said scaffold structure in
horizontally-spaced relation to one another to define therebetween
one or more intermediate locations alongside said scaffold
structure, each lift including: a rail secured in use to said
scaffold structure to stand upright; a shuttle mounted for
constrained movement along the rail; a winch rigidly mounted to the
shuttle for movement therewith; and a cable extending from a
location proximal to the top of the rail to the winch such that
actuation of the winch to coil the cable thereon draws the shuttle
upward; decks which, in use, are provided one for each intermediate
location and supported by the shuttles flanking said each
intermediate location to provide a platform upon which said mason
can stand while building; and benches which, in use, are provided
one for each intermediate location and supported by the shuttles
flanking said each intermediate location to provide a surface,
elevated in relation to the deck provided for said each
intermediate location, from which said mason can retrieve materials
for building.
2. A system according to claim 1, wherein the winches are electric
and, in use, the winches of the group are switched for movement in
concert.
3. A system according to claim 1, wherein, in each lift, the
shuttle is mounted to the rail by rollers carried by the shuttle
and captured by the rail.
4. A system according to claim 1, wherein, in each lift, the rail
includes a plurality of holes spaced apart along its length and the
shuttle carries a safety device which is spring-biased for movement
in a manner such that the safety device rides over the holes during
upward movement of the shuttle but, upon commencement of downward
movement of the shuttle, engages the first of the holes that it
meets, unless externally restrained against said spring-biased
movement, to arrest further downward movement of the shuttle.
5. A system according to claim 1, wherein the group can be a group
of three or more lifts arranged such that the platforms
collectively define a walkway alongside said scaffold
structure.
6. A system according to claim 5, wherein the walkway has two
straight lengths arranged in perpendicular to one another, for
laying a building inside corner.
7. A system according to claim 6, further comprising elements
adapted for mounting to the shuttles to serve as safety railings at
the ends of the walkway.
8. An elevator system for use by a mason with a scaffold structure,
the scaffold structure being of the type formed of: standard frame
structures, each including a pair of parallel standards rigidly
connected to one another; and standard cross-braces arranged in
pairs, each pair rigidly connecting and supporting a pair of
adjacent frame structures such that the standards are upright, said
system including: lifts which, in use, are provided one for each of
a group of two or more adjacent frame structures in said scaffold
structure, each lift including: a rail secured in use in sistered
relationship to a standard of the frame structure for which it is
provided, the rails defining therebetween one or more intermediate
locations alongside the scaffold structure; a shuttle mounted for
constrained movement along the rail; a winch mounted to the shuttle
for movement therewith; and a cable extending from a location
proximal to the top of the rail to the winch such that actuation of
the winch to coil the cable thereon draws the shuttle upward;
standard deck elements which, in use, are provided one for each
intermediate location and supported by the shuttles flanking said
each intermediate location to provide a platform upon which said
mason can stand while building; and standard bench elements which,
in use, are provided one for each intermediate location and
supported by the shuttles flanking said each intermediate location
to provide a surface, elevated in relation to the deck provided for
said each intermediate location, from which said mason can retrieve
materials for building.
9. A system according to claim 8, wherein the lifts, in use, can be
provided one for each of a grouping of three adjacent standards in
said scaffold structure to flank adjacent, perpendicular sides of
said scaffold structure, with two of the lifts disposed on one of
the perpendicular sides and the third lift disposed on the other of
the perpendicular sides; wherein a standard bench element, in use,
is provided one for each grouping, said standard bench element
being secured, in use, to the shuttles of the parallel lifts of
said each grouping; and further comprising: extended-length deck
elements which, in use, are provided one for each grouping, each
extended-length deck element being secured, in use, to the shuttles
of the parallel lifts of said each grouping to provide a platform
along the one perpendicular side flanked by said each grouping
which cantilevers beyond the other of the perpendicular sides
flanked by said each grouping; and filler elements which, in use,
are provided one for each grouping, each filler element being
secured, in use, to the shuttle of the third lift of said each
grouping and supported by the extended-length deck element provided
for said each grouping to provide a platform alongside the other of
the perpendicular sides flanked by said each grouping; corner
brackets which are provided one for each grouping, each corner
bracket, in use, being rigidly secured to the shuttle of the lift
adjacent to the third lift of said each grouping; and filler
shelves which are provided one for each grouping, each filler
shelf, in use, being rigidly secured to the shuttle of the third
lift of said each grouping and supported by the corner bracket
provided for said each grouping, to provide a surface alongside the
other of the perpendicular sides flanked by said each grouping from
which said mason can retrieve materials for building.
10. A scaffold system for use by a mason, said system comprising:
frame assemblies, each including a pair of rigidly-connected
parallel rails; cross-braces which, in use, are arranged in pairs,
each pair rigidly connecting and supporting a pair of adjacent
frame assemblies such that the rails thereof stand upright in
horizontally-spaced relation to one another; shuttles which, in
use, are provided one for each rail in a group of two or more
adjacent rails and mounted for constrained movement therealong, the
group of two or more adjacent rails defining therebetween one or
more intermediate locations; winches which, in use, are provided
one for each rail in the group and mounted for movement with the
shuttle mounted to said each rail; cables which, in use, are
provided one for each rail in the group, each extending from a
location proximal to the top of the rail for which it is provided
to the winch mounted to said each rail such that actuation of the
winch to coil the cable thereon draws the shuttle upward; standard
deck elements which, in use, are provided one for each intermediate
location and supported by the shuttles flanking said each
intermediate location to provide a platform upon which said mason
can stand while building; and standard bench elements which, in
use, are provided one for each intermediate location and supported
by the shuttles flanking said each intermediate location to provide
a surface, elevated in relation to the deck provided for said each
intermediate location, from which said mason can retrieve materials
for building.
11. An elevator system for use by a mason with a scaffold
structure, said elevator system comprising: lifts which, in use,
are disposed in a group and secured to said scaffold structure in
horizontally-spaced relation to one another to define therebetween
one or more intermediate locations alongside said scaffold
structure, each lift including: a rail secured in use to said
scaffold structure to stand upright; a shuttle mounted for
constrained movement along the rail; a winch rigidly mounted to one
of the rail and the shuttle; and a cable extending from the winch
to the other of the rail and the shuttle such that actuation of the
winch to coil the cable thereon draws the shuttle upward; decks
which, in use, are provided one for each intermediate location and
supported by the shuttles flanking said each intermediate location
to provide a platform upon which said mason can stand while
building; and benches which, in use, are provided one for each
intermediate location and supported by the shuttles flanking said
each intermediate location to provide a surface, elevated in
relation to the deck provided for said each intermediate location,
from which said mason can retrieve materials for building.
Description
RELATED APPLICATION
[0001] This application claims benefit of the filing date of and
right to priority of U.S. Provisional Patent Application Ser. No.
61/115,158 filed Nov. 17, 2008.
FIELD OF THE INVENTION
[0002] The present invention relates to the field of masonry.
BACKGROUND OF THE INVENTION
[0003] In the field of construction, scaffolds are regularly
utilized to enable workers to work at height. Each stage of the
scaffold typically makes provision for the suspension of planks or
other decking elements, to provide large, stable platforms within
the scaffold at spaced-apart elevations. As well, a plurality of
mounting holes are provided on the scaffold frames, to permit
brackets for suspending planks or other decking elements to be
installed on the scaffold exterior at periodic heights intermediate
the platform intervals. In masonry use, brackets are typically
installed on the scaffold exterior to support work platforms at an
elevation which renders it relatively convenient for the mason to
practice his or her trade. The exterior work platforms are removed
and reinstalled from time to time, as work progresses, to maintain
a convenient working height for the masons. Typically, laborers
load stores of building materials, i.e. bricks, blocks or stones,
onto the interior platform nearest the exterior platform on which
the mason is situated, and transfer building material therefrom as
needed to the platform of the mason, to keep the mason productively
engaged.
SUMMARY OF THE INVENTION
[0004] An elevator system, for use by a mason with a scaffold
structure, forms one aspect of the invention. This elevator system
comprises lifts, decks and benches.
[0005] The lifts, in use, are disposed in a group and secured to
said scaffold structure in horizontally-spaced relation to one
another to define therebetween one or more intermediate locations
alongside said scaffold structure. Each lift includes: a rail
secured in use to said scaffold structure to stand upright; a
shuttle mounted for constrained movement along the rail; a winch
rigidly mounted to the shuttle for movement therewith; and a cable
extending from a location proximal to the top of the rail to the
winch such that actuation of the winch to coil the cable thereon
draws the shuttle upward.
[0006] The decks, in use, are provided one for each intermediate
location and supported by the shuttles flanking said each
intermediate location to provide a platform upon which said mason
can stand while building.
[0007] The benches, in use, are provided one for each intermediate
location and supported by the shuttles flanking said each
intermediate location to provide a surface, elevated in relation to
the deck provided for said each intermediate location, from which
said mason can retrieve materials for building.
[0008] According to another aspect of the invention, the winches
can be electric and, in use, the winches of the group can be
switched for movement in concert.
[0009] According to another aspect of the invention, in each lift,
the shuttle can be mounted to the rail by rollers carried by the
shuttle and captured by the rail.
[0010] According to another aspect of the invention, in each lift,
the rail can include a plurality of holes spaced apart along its
length and the shuttle can carry a safety device which is
spring-biased for movement in a manner such that, in use, the
safety device rides over the holes during upward movement of the
shuttle but, upon commencement of downward movement of the shuttle,
engages the first of the holes that it meets, unless externally
restrained against said spring-biased movement, to arrest further
downward movement of the shuttle.
[0011] According to another aspect of the invention, the group can
be a group of three or more lifts arranged such that the platforms
collectively define a walkway alongside said scaffold
structure.
[0012] According to another aspect of the invention, the walkway
can have two straight lengths arranged in perpendicular to one
another, for laying a building inside corner.
[0013] According to another aspect of the invention, the system can
further comprise elements adapted for mounting to the shuttles to
serve as safety railings at the ends of the walkway.
[0014] Forming another aspect of the invention is an elevator
system for use by a mason with a scaffold structure. This scaffold
structure is of the type formed of: standard frame structures, each
including a pair of parallel standards rigidly connected to one
another; and standard cross-braces, each brace rigidly connecting
and supporting a pair of adjacent frame structures such that the
standards are upright.
[0015] This system includes lifts, standard deck elements and
standard bench elements.
[0016] The lifts, in use, are provided one for each of a group of
two or more adjacent frame structures in said scaffold structure.
Each lift includes a rail secured in use in sistered relationship
to a standard of the frame structure for which it is provided. The
rails define therebetween one or more intermediate locations
alongside the scaffold structure. Each lift further includes: a
shuttle mounted for constrained movement along the rail; a winch
mounted to the shuttle for movement therewith; and a cable
extending from a location proximal to the top of the rail to the
winch such that actuation of the winch to coil the cable thereon
draws the shuttle upward.
[0017] The standard deck elements, in use, are provided one for
each intermediate location and supported by the shuttles flanking
said each intermediate location to provide a platform upon which
said mason can stand while building.
[0018] The standard bench elements, in use, are provided one for
each intermediate location and supported by the shuttles flanking
said each intermediate location to provide a surface, elevated in
relation to the deck provided for said each intermediate location,
from which said mason can retrieve materials for building.
[0019] According to another aspect of the invention, the lifts, in
use, can be provided one for each of a grouping of three adjacent
standards in said scaffold structure to flank adjacent,
perpendicular sides of said scaffold structure, with two of the
lifts disposed on one of the perpendicular sides and the third lift
disposed on the other of the perpendicular sides. As well, the
system can further comprise extended-length deck elements, standard
bench elements, filler elements, corner brackets and filler
shelves.
[0020] The extended-length deck elements, in use, are provided one
for each grouping, each extended-length deck element being secured,
in use, to the shuttles of the parallel lifts of said each grouping
to provide a platform along the one perpendicular side flanked by
said each grouping which cantilevers beyond the other of the
perpendicular sides flanked by said each grouping.
[0021] The standard bench elements, in use, are provided one for
each grouping, each standard bench element being secured, in use,
to the shuttles of the parallel lifts of said each grouping to
provide a surface, elevated in relation to the platform along the
one particular side, from which said mason can retrieve materials
for building.
[0022] The filler elements, in use, are provided one for each
grouping, each filler element being secured, in use, to the shuttle
of the third lift of said each grouping and supported by the
extended-length deck element provided for said each grouping to
provide a platform alongside the other of the perpendicular sides
flanked by said each grouping.
[0023] The corner brackets are provided one for each grouping, each
corner bracket, in use, being rigidly secured to the shuttle of the
lift adjacent to the third lift of said each grouping.
[0024] The filler shelves are provided one for each grouping, each
filler shelf, in use, being rigidly secured to the shuttle of the
third lift of said each grouping and supported by the corner
bracket provided for said each grouping, to provide a surface
alongside the other of the perpendicular sides flanked by said each
grouping from which said mason can retrieve materials for
building.
[0025] Forming yet another aspect of the invention is a scaffold
system for use by a mason. This system comprises frame assemblies,
cross-braces, shuttles, winches, cables, standard deck elements and
standard bench elements.
[0026] The frame assemblies each include a pair of
rigidly-connected parallel rails.
[0027] In use, each cross-brace rigidly connects and supports a
pair of adjacent frame assemblies such that the rails thereof stand
upright in horizontally-spaced relation to one another.
[0028] The shuttles, in use, are provided one for each rail in a
group of two or more adjacent rails and mounted for constrained
movement therealong, the group of two or more adjacent rails
defining therebetween one or more intermediate locations.
[0029] The winches, in use, are provided one for each rail in the
group and mounted for movement with the shuttle mounted to said
each rail.
[0030] The cables, in use, are provided one for each rail in the
group, each extending from a location proximal to the top of the
rail for which it is provided to the winch mounted to said each
rail such that actuation of the winch to coil the cable thereon
draws the shuttle upward.
[0031] The standard deck elements, in use, are provided one for
each intermediate location and supported by the shuttles flanking
said each intermediate location to provide a platform upon which
said mason can stand while building.
[0032] The standard bench elements, in use, are provided one for
each intermediate location and supported by the shuttles flanking
said each intermediate location to provide a surface, elevated in
relation to the deck provided for said each intermediate location,
from which said mason can retrieve materials for building.
[0033] As yet another aspect of the invention, in the lifts, the
winches can be rigidly mounted to one of the rail and the shuttle
and the cable can extending from the winch to the other of the rail
and the shuttle such that actuation of the winch to coil the cable
thereon draws the shuttle upward.
[0034] Other advantages, features and characteristics of the
present invention, will become apparent upon consideration of the
following detailed description and the appended claims with
reference to the accompanying drawings, the latter being briefly
described hereinafter.
BRIEF SUMMARY OF THE DRAWINGS
[0035] The description herein makes reference to the accompanying
drawings wherein like reference numerals refer to like parts
throughout the several views and wherein:
[0036] FIG. 1 is a perspective view of a prior art scaffold
structure;
[0037] FIG. 2 is a schematic view of the structure of FIG. 1 in use
with an exemplary embodiment of the elevator system of the
invention;
[0038] FIG. 3 is a schematic view of the structure of FIG. 1 in use
with another exemplary embodiment of the elevator system of the
invention;
[0039] FIG. 4 is a side detail view of the structure of FIG. 2,
disposed against a masonry wall;
[0040] FIG. 5 is an enlarged view of a portion of the structure of
FIG. 4;
[0041] FIG. 6 is a front detail view of the structure of FIG. 2,
with the guardrail components removed, for clarity;
[0042] FIG. 7 is a top plan view of a portion of the structure of
FIG. 3;
[0043] FIG. 8 is a enlarged, partial view of encircled structure 8
of FIG. 6, with the guardrail elements shown;
[0044] FIG. 9 is a view, similar to FIG. 7, showing another
application of the invention;
[0045] FIG. 10 is a side view of a portion of the structure of FIG.
9;
[0046] FIG. 11 is a partial front view of the structure of FIG. 9;
and
[0047] FIG. 12 is a view of the various components of the system in
isolation.
DETAILED DESCRIPTION OF THE ILLUSTRATIVE EMBODIMENT
[0048] An elevator system 20 according to an exemplary embodiment
of the invention is shown in attached FIGS. 2-12, in use with a
scaffold structure 22 of the general type that is shown in
isolation in FIG. 1.
[0049] With initial reference to FIG. 1, the scaffold structure 22
shown therein is of conventional construction and forms no part of
the invention, but for clarity in the following description should
be understood to be of the type foimed of standard frame structures
24, standard cross-braces 26 and planks 27.
[0050] The standard frame structures 24 each include a pair of
parallel standards 28 rigidly connected to one another. As shown,
the frame structures 24 are of the "arch" type, with spaced-apart
welded steel ladders 30 defining the sides of the frame structures
24, a truss arrangement 32 defining the top of the frame structure
24, and an open central area 34 beneath the arch defined by the top
and sides. The planks 27 are set upon the truss arrangements 32 to
define interior platforms 40. For greater certainty, it is herein
clarified that in FIG. 1, four "stages" of scaffolding are shown [2
in height, 2 in length].
[0051] Each cross-brace 26 is formed of a pair of tubular steel
elements pivotally connected to one another. In use, the
cross-braces 26 are arranged to rigidly connect and support a pair
of adjacent frame structures 24 such that the standards 28 thereof
are upright.
[0052] With general reference to FIGS. 2, 3, the elevator system 20
itself will be understood to comprise lifts 44, decks 46 and
benches 48.
[0053] The lifts 44 indicated generally in FIGS. 2, 3 will, with
reference to FIG. 5, each be seen to include a rail 50, a shuttle
52, a winch 54 and a cable 56.
[0054] In the exemplary embodiment, the rail 50 is a length of
Unistrut P1000 T channel. The shuttle 52 has a pair of spaced-apart
parallel arms 58 and is mounted to and for constrained movement
along the rail 50 by rollers 60 carried by the shuttle 52 and
captured by the rail 50. The winch 54 is electric and is rigidly
mounted to the shuttle 52 for movement therewith. The cable 56
extends from a location proximal to the top of the rail 50 to the
winch 54 such that actuation of winch 54 to coil the cable 56
thereon draws the shuttle 52 towards the top of the rail 50.
[0055] The decks 46 are of a depth sufficient to permit a person to
stand thereon.
[0056] The benches 48 are of a depth sufficient to stack building
materials such as brick, block or stone, thereon.
[0057] In one application of the invention, as shown in FIGS. 2 and
4-6, a group of the lifts 44 are secured to the scaffold structure
22 in horizontally-spaced relation to one another to define
therebetween one or more intermediate locations 58 alongside said
scaffold structure 22. To provide this, the rails 50 are secured in
use via wedge clamps 61 in sistered relationship to standards 28 of
the frame structures 24 to form frame assemblies, wherein the rails
50 are upright.
[0058] In this application, standard deck elements 62 are provided
one for each intermediate location 58 and supported by the shuttles
52 flanking said each intermediate location 58 such that the deck
46 defined by the deck element(s) 62 provides (i) a platform upon
which a mason can stand while building and (ii) an elongate walkway
along the length of the wall. Similarly, standard bench elements 64
are provided one for each intermediate location 58 and supported by
the shuttles 52 flanking said each intermediate location 58 such
that the bench 48 provides a surface, elevated in relation to the
deck 46, from which a mason standing on the platform can retrieve
materials for building.
[0059] Pins 104 are used to secure the elements together.
[0060] The winches 54 of the group are, in use, gang-switched for
movement in concert, such that the shuttles 52, winches 54,
standard deck elements 62 and standard bench elements 64 move in
unison, to define an elevator arrangement for transporting the
platform to any desired height, without the need for laborious
removal and replacement of the building materials, planks and
brackets with each move, as demanded in the prior art.
[0061] For safety, in each lift 44, rail 50 includes a plurality of
holes 66 [best seen in FIG. 6] spaced apart along its length and
shuttle 52 carries a safety device 68 [best seen in FIG. 5] biased
by a spring 70 for movement in a manner such that the safety device
68 rides over the holes 66 during upward movement of the shuttle 52
but, upon commencement of downward movement of the shuttle 52,
engages the first of the holes 66 that it meets, unless externally
restrained [i.e. tied back] against said spring-biased movement, to
arrest further downward movement of the shuttle 52. When the
elevator is intended to be lowered, the building materials and
mason are vacated therefrom, the safety devices withdrawn and
physically restrained against said spring-biased movement [i.e.,
tied back] and the winches are actuated in unison to lower the
assembly.
[0062] Also shown in the Figures are elements 72 which are mounted
to the shuttles 52 in use, to serve as safety railings at the ends
of the walkway/platform. Yet further adding safety are outrigger
assemblies 100 and lateral support arms 102 that stabilize the
scaffold 22.
[0063] Another application is shown in FIGS. 3 and 7. In this
application, the lifts 44 are provided one for each of a grouping
of three [or more] adjacent standards in said scaffold structure to
flank adjacent, perpendicular sides of the scaffold structure, with
two of the lifts disposed on one of the perpendicular sides 74 and
the third lift disposed on the other 76 of the perpendicular sides.
Also provided, for the group, is an extended-length deck element
78, a filler element 80, a corner bracket 82, a standard bench
element 64 and a filler shelf 84.
[0064] The extended-length deck element 78 is secured, in use, to
the shuttles of the parallel lifts to provide a platform on the one
perpendicular side 74 which cantilevers beyond the other 76 of the
perpendicular sides. The filler element 80 is secured to the
shuttle of the third lift and is supported by the extended-length
deck element 78 to provide a platform alongside the other 76 of the
perpendicular sides. Together, the extended-length deck element 78
and the filler element 80 define a walkway having two straight
lengths arranged perpendicular to one another, for use by the mason
when laying a building inside corner. The standard bench element 64
is secured, in use, to the shuttles of the parallel lifts to
provide a bench on the one perpendicular side 74. The corner
bracket 82 is rigidly secured to the shuttle of the lift adjacent
to the third lift. The filler shelf 84 is rigidly secured to the
shuttle of the third lift of said each grouping and supported by
the corner bracket 82 to provide a surface alongside the other of
the perpendicular sides 76 from which said mason can retrieve
materials for building.
[0065] Yet another exemplary embodiment of the invention is shown
in FIGS. 9-11. In this application, the lifts 44 are provided one
for each of a grouping of two adjacent standards 44 in said
scaffold structure. Also provided, for the group, is an
extended-length deck element 78, a standard bench element 64, a
safety rail adapter 88, a safety rail bracket 90 and a pair of
chains 92. The extended-length deck element 78 is secured, in use,
to the shuttles of the parallel lifts to provide a platform which
cantilevers beyond one of the shuttles to a desired extent [the
deck element 78 is telescopic, in the manner of a sliding door or
the like, such that the cantilever is adjustable]. The standard
bench element 64 is secured, in use, to the shuttles of the
parallel lifts to provide a bench. The safety rail adapter 88 is
secured to the end of the deck element 78, to provide a safety
railing at the end of the deck element 78. The safety rail bracket
90 is secured to the lift beyond which the deck element is
cantilevered, and the chains 92 are suspended between adapter 88
and bracket 90, to provide railing elements. This embodiment of the
invention is useful for cladding structures with underhangs or the
like.
[0066] Although only three embodiments of the present invention are
herein shown and described, it will be evident that numerous
variations may be made.
[0067] For example, whereas the embodiments of FIGS. 2 and 3 each
include three lifts, arranged, respectively, in linear and
perpendicular fashion, greater or lesser numbers of lifts may be
deployed.
[0068] As well, whereas the invention is illustrated as an
aftermarket item, for use with conventional scaffolds, custom frame
assemblies could be created, wherein rails could take the place in
the scaffold frame structures of the standards; but for this
change, the system would be substantially identical in form and
function to the embodiments disclosed, and thus, neither
illustrations nor detailed description are provided nor viewed as
necessary for the purpose of enablement.
[0069] Additionally, whereas in the exemplary embodiments, the
shuttles carry the winches, and the cables are secured to the
rails, persons of ordinary skill would readily appreciate that the
winches could be carried by, for example, the rails, with the
cables secured to the shuttles.
[0070] Yet further modifications are also possible. Accordingly,
the present invention should be understood to be limited only by
the accompanying claims, purposively construed.
* * * * *