US2445453A - Portable scaffold - Google Patents

Description

y 0, 1948. K. PENNINGTQN PORTABLE SCAFFOLD 2 Sheets-Sheet 1 Filed April 5, 1946 y 1943- L. K. PENNINGTON 2,445,453

PORTABLE S CAFFOLD Filed April 5, 1946 2 Sheets-Sheet 2 INVENTOR. -11 0c pen/701175.

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Patented July 20, 1948 UNITED STATE PATENT OFFICE PORTABLE, SCAFFOLD Lacy K. Pennington, Fremont, Mich.

Application April 5, 1946, Serial No. 659,829

6 Claims. 1

This invention relates to scaffolds such as used by building contractors, maintenance men, repair men and others Who are required to work on, build, paint and/or repair buildings and other structures.

One of the prime objects of the invention is to design a portable scaffold that can be easily extended to any desired height, that may be erected for either inside or outside work, and which is of suificient'rigidity to support the workmen, tools and materials as the work progresses.

Another object is to provide a portable scaffold which can be readily transported and assembled and which is suitably braced and reinforced to form a stable, rigid structure.

A further object is to design a scaffold composed of a multiplicity of like sections, the mem bers of which are interchangeable with the corresponding members of any other section, which is so designed that it may be extended both horizontally and vertically, and in which a horizontal extension may be disposed at an angle with relation to the remaining portion of the scaffold.

Still a further object is to provide a scaifold including special multiple spoked corner couplings into which the ends of the detachable pipe sec tions are telescoped and secured, and provide means in conjunction with the spoke sockets to facilitate the insertion of the pipes therein,

A further object still is to design a collapsible scaffold which can be easily and economically manufactured and assembled, which can be erected in units, and which is provided with means to enable the workman to climb from one section to another, either for the erection of the higher L- units or for climbing from the ground to the top unit after the scaffold has been erected.

With the above and other objects in view, the present invention consists in the combination and arrangement of parts, hereinafter more fully described, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims, it being understood that changes may be made in the form, size, proportion and minor details of construction without departing from the spirit, or sacrificing any of the advantages of the invention.

In the drawings:

Fig. 1 is a side-elevational view of my new scafiold showing the lower ground unit set up with another unit in place thereon.

Fig. 2 is a fragmentary, top plan view of the scaffold.

Fig. 3 is a detail, fragmentary, side-elevational view showing the ladder connecting the units 2 and the adjustable platform that spans the top unit.

Fig. 4 is also a fragmentary, vertical view showing the manner of connecting the lower end of the ladder to the ground unit.

Fig. 5 is a detail, side-elevational view of the vertical standard.

Fig. 6 is a side view of one of disposed brace members.

Fig. 7 is a fragmentary, edge-elevational view of the brace member illustrating the end clamp.

Fig. 8 is a similar View of the opposite end.

Fig. 9 is an enlarged, plan view of the multiple spoked socket coupling.

Fig. 10 is a side-elevational view thereof.

Fig. 11 is an enlarged, transverse-sectional view showing the manner of securing the pipe in the spokes.

Referring now mor particularly to the drawings in which I have shown the preferred embodiment'of my invention. The scaffold comprises spaced-apart pairs of standards [4 and I5 respectively, having multipl spoked coupling members 5 secured to or formed integral therewith, each coupling comprising horizontally disposed diverg ing spoke sections I6, ll, l8 and 19 respectively, and horizontally disposed pipes 20 ar telescopically mounted in said hollow spokes, bosses 2i being welded to or cast integral with each spoke section, and a setscrew 22 is provided therein for securing the horizontally disposed pipe member 20 in position. Angularly disposed braces 2 1 are welded to the respective spoke sections and to the standards l4 and I5 respectively.

Leg sections 25 telescope into the corner standards M and i5, and a flange 26 is welded to the lower end thereof, setscrews 21 being provided as shown for clamping purposes.

A plurality of vertically and circumferentially spaced openings 23 are provided in the standards [4 and I5, and a similar opening 29 is provided in the leg 25, a removable pin 30 extending through the pipe sections when the openings are in register, said pin being secured to a chain 31 which is in turn secured to one of the braces 24 so that the pin will not become lost.

Vertically disposed socket sections 32 are formed integral with the coupling members S and accommodate the vertical pipe standards 33, the upper end of the pipes telescoping into the depending leg 34 of the coupling members M, these coupling members being exactly the same as the members S, excepting that the depending legs 34 are shorter than the standards l4 and. IS,

the angularly 3 and the end of each spoke section is cut away as at 35 to form a pilot to facilitate inserting the ends of pipes 20 in the hollow spokes, and setscrews 35 are provided for securing them in position.

The height of the scaflold is built up by adding additional vertical members 33, placing the multiple spoked coupling members in position, and then connecting them by the various horizontal members 20.

A ladder L is provided to enable the workmen to climb from one unit to the next, and comprises spaced-apart members 40 connected by means of rungs 4|, a clip 42 being bolted to the lower ends of the members 40, the end of the clip being curved to conform to the curvature of the pipe.

A similar clip 43 is secured to the upper ends of the members 40, the center section being shaped to fit the pipe section 20, the opposite end of the clip being secured to an extensible platform 44 which spans the pipe members 20 and forms afloor area for tools and materials, and a space to accommodate one or more workmen.

Angularly disposed brace members 4| extend from one unit tothe next, the end of each brace being disposed at an angle with relation to the main body to engage the pipe sections 20, and a setscrew 46 serves to secure the brace in set position. 1

The spoke sections l6 and I9 provide for extensions, either straight away or at right angles if desired, and the entire structure can be easily and quickly erected and/or dismantled.

Under certain conditions, it may be desirable to dispose the spoke members H! at an angle with relation to the spoke l8, and this can be readily done when desired, so that the scaffold is angular in outline to permit it to follow angles or corners of the buildings.

From the foregoing description, it will be clearly obvious that I have perfected an inexpensive portable scaffold that can be economically constructed, that can be'readily assembled, and that is strong-and sturdy when assembled.

What I claim is:

1. A scaffold comprising a plurality of spacedapart legs, each of said legs including an extensible section telescopically and adjustably mounted therein, means for securing the extendab-le sections in adjusted position, a corner coupling member mounted on each leg, and formed with a plurality of radially disposed hollow pipe spoke sections projecting horizontally therefrom, angularly disposed braces welded to the respective spokes and to the leg of the corner coupling, and tubular pipe sections removably mounted in and connecting certain spoke sections of each corner member for securing the legs in spaced-apart relation and forming a rigid scaffold unit.

2. The combination as defined in claim 1 in which the coupling members include centrally disposed upwardly projecting pipes forming socket members adapted to receive the vertical legs to permit the next unit to be superimposed thereon.

3. A construction as defined in claim 1 in which the upper portion of the outer end section of each spoke is cut away to form a pilot and guide for the ends of the tubular sections.

4. A scaffold comprising a plurality of superimposed units including spaced-apart standards, a tubular section telescopically and adjustably mounted in each standard and means for securing them in adjusted position, a corner coupling on the upper end of each standard and formed with circumferentially spaced, horizontally disposed, hollow spoke members, the outer upper half of which is cut away for a predetermined distance to facilitate insertion of a pipe, angularly disposed braces connecting the pipe sections and the main body of the coupling, tubular members connecting the respective corner couplings in spaced-apart relation to form a complete unit, vertically disposed socket extensions on each coupling, standards removably mounted therein, couplings on the upper ends of the upper standards, pipes connecting the couplings to form the superimposed unit, and a diagonally disposed brace member detachably connected to the horizontally disposed pipe sections of each unit.

5. A combination as defined in claim 4 in which a ladder is detachably connected to the horizontally disposed pipe sections of each unit, and a horizontally disposed extensible platform connected to said ladder and spanning the horizontal pipe sections of the upper unit.

6. A scaffold comprising, a plurality of super imposed units, each unit including spaced-apart corner standards, a corner coupling mounted on each standard and formed with circumferentially spaced, horizontally disposed hollow spoke sections, horizontal tubular sections mounted in said spoke sections and forming a rigid unit, additional identically similar units mounted on said first unit, ladders detachably connected to each unit, an extensible platform spanning the tubular sections of the upper unit and forming an extension of said ladder.

LACY K. PENNINGTON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,113,196 Jones Apr. 5, 1938 2,125,829 Uecker et a1 Aug. 2, 1938 2,237,572 Manion Apr. 8, 1941 2,249,658 Kemner July 15, 1941 2,272,349 Noser Feb. 10, 1942 2,383,163 Roten Aug. 21, 1945 2,354,906 Bailey et al Aug. 1, 1944 FOREIGN PATENTS Number Country Date 468,766 Great Britain July 6, 1937

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