US3566991A

US3566991A - Telescoping staging

Info

Publication number: US3566991A
Application number: US830305A
Authority: US
Inventors: Leo R Proulx
Original assignee: Individual
Current assignee: Individual
Priority date: 1969-06-04
Filing date: 1969-06-04
Publication date: 1971-03-02
Anticipated expiration: 1988-03-02

Abstract

This invention relates to a telescoping staging which may be operatively raised and lowered to desired height levels. There is also provided a canopy member supported by the movable portion of this staging which offers environmental protection for workmen using this staging device.

Description

United States Patent Inventor Leo R. Proulx 66 Cypress St., Manchester, N.H. 03103 Appl. No. 830,305

Filed June 4, 1969 Patented Mar. 2, 1971 TELESCOPIN G STAGING 2 Claims, 9 Drawing Figs.

U.S. Cl.....'. 182/129, 182/141, 182/179 Int. Cl E04g1/18,

E04g l/26 Field ofSearch 182/141,

[56] References Cited UNITED STATES PATENTS 800,806 10/1905 King 182/141 2,796,299 0/1957 Freeman 182/141 3,017,968 l/l962 McMahon 182/141 FOREIGN PATENTS 589,443 6/1947 Gr'eatBritain 182/132 Primary Examiner Reinaldo P. Machado Att0rneyFrederick D. Goode ABSTRACT: This invention relates to a telescoping staging which may be operatively raised and lowered to desired height levels. There is also provided a canopy member supported by the movable portion of this staging which offers environmental protection for workmen using this staging device.

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LEO R- PIPOULX 'rrrnscormo STAGING This invention relates to improvements in a telescoping staging and more particularly to an improved form of telescoping staging-which offers weather protection to masons or others engaged in the erection and construction of one or two story masonry building walls.

The construction of masonry type building walls has often depended on weather conditions, and more particularly on whether the temperature was above freezing, and whether the presence of or likelihood of rain was imminent. These weather variables in turn have significant effect on the contractors time schedule for building erection, both in terms of time and cost. I i a Another, perhaps more important contraction consideration of the time and cost relation is the cost of employing masons themselves. This particular labor cost has now reached such a high figure, that every consideration must be given to permitting these masons to devote their entire effort to actually laying bricks, blocks and the like, and, conversely, to devote as little of their time as possible to the peripheral aspects of their trade, 'i.e,., carrying brick, mixing mortar, or the like. If such high-cost labor is to be used most effectively, each mason should be conveniently locatedwith respect tothe particular course of brick which he is laying, andsimilarly. the

materials with which he works should also be conveniently located with respect to availability and emplacement into, the wall being constructed.

With the foregoing criteria in mind, I have developed an adjustable staging which may be employed in single units on one side of a wall, or, as shown in the illustrated embodiment, as cooperating multiple units in opposed relation on each side of the wall being constructed. Each of the staging units is ar-. ranged so as to provide means for supporting a masonor other workman on one level, while also providing means for carry,- ing the raw materials with which he works on another level, preferably about waist high. Itis further provided that the entire staging unit is vertically adjustable in desired increments in order that the mason may always maintain his position with respect. to the wall he is building in the most convenient relation.

It is, accordingly, among the objects of this invention to provide a bilevel adjustable staging device for masons characterized by exceptional rigidity.

It is a further object of this invention to provide means by which that portion of the wall being erected adjacent to the staging unit may be protected from weather environments by an enveloping canopy means.

It is a still further object of this invention to provide an adjustable staging which provides automatic locking features as it becomes extended in height.

With these, and other objects in view as will hereinafter more fully appear and which will be more particularly pointed out in the appended claims, general reference is now had, to the following description taken in conjunction with the accompanying drawings in which: I

FIG. 1 illustrates a side elevation view of a typical staging unit with the depressed or collapsed condition shown in dotted line;

FIG. 2 illustrates in enlarged view. a typical supporting leg member in partial cutaway view showing with particularity the elevating pinsen'gaged with the platform structure;

FIG. 3 illustrates a cross-sectional view taken on line 3-3 of FIG. 2;

FIG. 4 illustrates a cross-sectional view taken on line 4-4 of FIG. 2;

FIG. 5 illustrates across-sectional view taken on line 5-5 of FIG. I;

FIG. 6 illustrates a cross-sectional view taken on line 6-6 of FIG. 9 illustrates a cross-sectional view of a typical canopy clamp taken on line 9-9 of FIG. 8.

Referring now with greater particularity'to the drawings, there is shown in. FIG. I a side elevation view of a typical staging unit 10 generally comprised of a plurality of vertically disposed rigid leg members 11 fabricated of conventional hollow square tube portions interconnected on the ends by brace members 12 so as to form a rigid base support 13. Brace elements 14 are employedas strengthening members on the sides to give added rigidity to the base support.

Carried within hollow leg members 11 is a movable framework 15 comprised of leg members 16 adapted to slide interiorly of corresponding leg members 11 and interconnected, by suitable bracing members 117. A platform 18 comprised of planks or other suitable material is supported by the top of bracing members 17 and is used to carry the masonry supplies. such as bricks, mortar, or other materials.

Fixed to leg members 16 at the front of framework 15 and outboard therefrom are angle braces 19. A platform 20 comprised of planks or other material is conventionally supported by angle braces 19 for a mason or otherworkman to stand on. Platform 18 is designed to be located about waist high to a person standing on platform 20. A lift mechanism 21 is attached to each leg 11 for coacting relation with corresponding leg members 16 for raising and lowering movable framework 15.

Referring now with, greater particularity to FIGS. 2, 3 and 4, there are shown the details of a typical leg member 11 and its corresponding movable leg member 16 carried therein. Looking first at FIG. 3, leg member 16 is located within leg 11 so as to be substantially tangent thereto on two sides. Angle braces 19 are rigidly fastened to leg 16 by welding or other suitable meanswith appropriate relief slots being provided. therefor in leg 11 as shown in FIG. 2. Also secured to leg l6by welding is aconventionalratchet bar 22 so oriented as to urge leg 16 into the tangential relation hereinbefore mentioned. Leg 11 is suitably ported or recessed whereby a conventional jacking mechanism 21 issecurely fixed thereto so as to cooperatively engage with ratchet 22., Thus it can be seen that as adjacent end pairs of jack mechanisms are actuated, each coacts in a conventional manner with its corresponding ratchet 22 which in turn is securely fixed to leg 16, and thus moves it and the append movable framework 15 upwardly. A suitable leveling disc 24 of conventional design is provided at the base of each leg for initial leveling ofthe staging unit prior to using.

Referring now to FIG. 5 which illustrates a side elevation view takenon line 5-5 of FIG l,'there is shown a typical crossbracing arrangement for each staging unit. Brace members 25 are removably attached to adjacent leg members 11 to impart necessary rigidity to the base support 13. Each brace member 26 is pivotally mounted at its upper end by a conventional wing nut and stud or other fastening means 27. The lower end of each brace 26 has a plurality of serrations 28 adapted to engage with cross members 12 of base support 13. Thus, as movable framework 15 is lifted vertically, brace members 26 will also be raised and engageable with crosspiece 12, thus automatically bracing framework 15 against swaying movement.

Referring further to FIGS. 1 and 8, the movable frame portion 15 carries a series of upstanding generally arcuately shaped canopy support members 29 which may, in the caseof multiple opposed staging units be connected in the nature of rafters, and which can support in attached fashion a plastic canopy 30. These canopy support members are preferably made of thin walled tubing of approximately 1 /4 inches more or less.

The plastic canopy itself may be held in place by any number of methods, however, the illustration in FIG. 9 shows one embodiment which has been found useful.

I claim:

1. A telescoping staging comprising in combination:

a. A pair of rigid, generally rectangular shaped base support means;

b. a correspondingly shaped framework slidably' carried by each'of, said base support means;

0. means mounted on said support means and operatively coacting with the framework whereby to raise and lower said framework;

d. a canopy supported above said framework in spaced relation thereto;

e. means carried by said framework for supporting said canopy; each said rigid base support means comprising f. a plurality of vertically disposed hollow tube portions;

g. bracing members interconnecting that pair of opposed tube portions determining each end of said base support means;

h. means for leveling said base support means which are integrally and coextensively connected to the bottom end of each tube portion;

i. a plurality of crossbracing members each pivotally fastened at one end thereof to respective upper corner portions at the front and rear of said framework;

j. the other end of each said crossbracing member being freely supported by the aforesaid bracing member diagonally located from the pivotal connection to said framework; and

k. said other end of each crossbracing member carrying a series of serrations longitudinally along one edge thereof, adapted to interlockingly engage with its supporting bracing member as the framework is raised.

2. The structure of claim 1 wherein said correspondingly shaped framework comprises:

a. a first platform member;

b. a plurality of rigid leg members depending from said platform and carried within corresponding ones of said hollow tube portions;

c. angle braces attached outboard of the rigid leg members at the front of said framework;

d. a second platform member carried by said angle braces;

and

e. said first platform being located about waist high with respect to a person standing on said second platform.

Claims

1. A telescoping staging comprising in combination: a. A pair of rigid, generally rectangular shaped base support means; b. a correspondingly shaped framework slidably carried by each of said base support means; c. means mounted on said support means and operatively coacting with the framework whereby to raise and lower said framework; d. a canopy supported above said framework in spaced relation thereto; e. means carried by said framework for supporting said canopy; each said rigid base support means comprising f. a plurality of vertically disposed hollow tube portions; g. bracing members interconnecting that pair of opposed tube portions determining each end of said base support means; h. means for leveling said base support means which are integrally and coextensively connected to the bottom end of each tube portion; i. a plurality of crossbracing members each pivotally fastened at one end thereof to respective upper corner portions at the front and rear of said framework; j. the other end of each said crossbracing member being freely supported by the aforesaid bracing member diagonally located from the pivotal connection to said framework; and k. said other end of each crossbracing member carrying a series of serrations longitudinally along one edge thereof, adapted to interlockingly engage with its supporting bracing member as the framework is raised.

2. The structure of claim 1 wherein said correspondingly shaped framework comprises: a. a first platform member; b. a plurality of rigid leg members depending from said platform and carried within corresponding ones of said hollow tube portions; c. angle braces attached outboard of the rigid leg members at the front of said framework; d. a second platform member carried by said angle braces; and e. said first platform being located about waist high with respect to a person standing on said second platform.