US1116098A - Combined ladder and scaffold-support. - Google Patents

Description

E. H. MORRISON.

GOMBINED LADDER AND SCAFFOLD SUPPORT. APPLICATION FILED 11112.13, 1914.

Patented Nov. 3, 1914.

2 SHEETS-SHEET 1.

gwue/wto'c E-H- MORRISON TH" NORRIS PETERS CO. PHOTD-LITh-L. WASHINGTON D. C,

B. H. MORRISON. COMBINED LADDER AND SGAFPOLD SUPPORT. APPLIOATION IILBD MAB.18,1914. 1,1 16,098. Patented Nov. 3, 1914.

2 SHEBTS-SKEET 2.

a e o amen 1430's E I-l- MORRISON TED; STATES PATENT OFFICE.

EBEN H.MORRISON, F CORUNNA, MICHIGAN, ASSIGNOR 0F ONE-HALFTO WILLIAlVI HENRY WILSON, OF GORUNNA, MICHIGAN.

COMBINED LADDER AND SCAIFFOLD- SUPPORT.

Specification of Letters Patent.

Application filed March 18, 1914. Serial No. 825,614.

To all whom it may concern j Be it known that I, Earn 11. Moninson, a citizen of the United States, residing at Corunna, in the county of Shiawassee and State ofMichigan,,have invented certain new and usefullmprovements in Combined Ladders and ScaffoldSupports, of which the following is a specification, reference being had to the accompanying drawings.

I inventionconsists in the novel construction,

combination and arrangement of parts to be hereinafter more fully descrlbed, claimed,

. and illustrated in the accompanying drawings, in WlllCh'.

Figure 1 is a perspective view of my 1nvention set up as a combined scaffold support and ladder. Fig. 2 is a side elevation showing the device used as an extension ladder. Fig. 3 is a side elevation showing the device used as an inclined ladder. Fig.

1 is an elevation of the various parts in folded position. Fig. 5 is a fragmentary side view showing the application of one of the hooks. Fig. 6 is a front view thereof. Fig. 7 is a fragmentary perspective view of one of the sectional braces. Fig. 8 is a fragmentary longitudinal section thereof.

Referring more particularly to the drawings, the numerals 1 and 2 designate a pair of supporting structures, which are alike in construction, the structures comprising parallel base members 3, which are connected at their opposite ends by cross rods 4:.

Mounted in notches 5 in the upper edges of the bases 3 are the side bars 6 of the vertically disposed ladders, and links 7 are provided, one end of each linkbeing pivotally connected to one side ofthe bar 6 at its lower end, and the opposite end of each link being pivotally connected to one 'of the bases 3.

To support the ladder of each structure in its vertical position, braces are provided, the bracesbeing formed of upper and lower sections 8 and 9 respectively. The upper section 8 of each of the braces is pivotally connected at its upper end to one of the side bars 6, and the lower section of each brace is pivotally connected at its lower end to one of the bases 3, the upper end of the lower section of each brace being pivot-ally connected by a pin 10 to the upper section of the brace adjacent its lower end. The lower section of each bracehas an opcningll formed therein adjacent its upper end, and

the upper section of each brace has an opening1-2 formed in the lower end thereof, the openings 11 and 12 being adapted to register when the sections 8 and 9 of the brace are in longitudinal alineinent. To securely maintain the sections of each brace in longitudinal alincment aspring plate 13 is connected at one end to the pivot pin 10, the opposite end ofthe plate being formed with a laterally projectingstud 14;, the stud being adapted to pass through the alined openings 11 .and 12,to prevent accidental foldingof the sections of the brace. The free end of the spring plate is preferably curled as at 15, to provide a suitable handle whereby the free end of the plate may be raised to disengage the stud 1 L from the openings 11 and 12 when it is desired to foldthe sections of the brace.

The upper rung 16 of the ladder of each structure is tubularly formed and projects through the side bars, the tubular rung being adapted to receive a rod 17, which may be drawn outwardly from either side of the tubular rung. An inclined ladder 18 is provided, the lower end of each side bar of the ladder being provided with a notch 19, and the inner edge of each side bar having hooks 20 connected thereto intermediate of its ends and adjacent its opposite ends. A scaffold board 21 is provided, the opposite ends of the board being adapted to rest upon horizontally alined rungs of the spaced supporting structures, so that a scaffold is provided whereby the ceiling of a room may be papered or painted. To allow the workmen to easily ascend to the scaffold board 211, the inclined ladder is arranged so that the notch 19 in the inner side bar thereof engages the inner cross bar -lof one of the supporting structures, and the extension rod 17 1S withdrawn from the tubular upper rung of the ladder supported upon the base,

cd for engagement with the tubular upper rung 1G, and the hook 20 on the outer side barbeing adapted to engage the outer end Patented Nov. 3, 1914.

of the rod 17,as illustrated in the drawings. T he notches 19 are of suflicientdepth to allow the lower ends of the ladder '18 to rest pon the floor, and when the combined ladder and scaffold support is set up in this nected to both of the supporting structures,

so that the workmen may operate upon my device at the same time, thereby allowing the ceiling and two of the walls of the room to be papered or painted at the same time.

In Fig. 3 of the drawings, I have illustrated the manner in which the ladder 18 may be connected to one of thesupporting structures, when it is desired to use the ladder 18 for side wall work, or for any use to which an inclined ladder may be put. In

this arrangement, the side bars of the ladder 18 are disposed between the base bars, of the supporting structure, so that the notches 19 in the lower ends of the side bars I of the ladder enga e the inner cross rod 1,

ladder.

and the hooks 20 adjacent the upper ends of the side bars engage the upper rung 16 of the supporting ladder, the rod 17 being disposed within the tubular rung.

In Fig. 2 of the drawing, 1 have illustrated the manner in which one of the supporting structures and the ladder 18 may be connected to provide an extension ladder. In this arrangement, the hooks on the lower ends of the side bars of the ladder 18 are engaged with one or the lower rungs of the supporting ladder, and the hooks intermediate of the ends of the side bars of the ladder 18 are engaged with one of the rungs adjacent the upper end of the S111). porting ladder so that the ladder 18 is disposed in a vertical position with the upper end thereof projecting above the upper end of the supporting ladder. It will be seen that the hooks 20 may be readily disengaged from the rungs of the ladder and connected to the other rungs thereof to adjust the height to which the ladder 18 extends.

From the above description, taken in connection with the accompanying drawings, it will be seen that l have provided a combination device, which may be readily set up for use as a scaiiold support, or may be used as an ordinary step ladder, or as an extension The various parts of the device may be readily folded in compact form, as illustrated in Fig. d of the drawings, to re duce the size of the same for convenience in storing and shipping.

its advantages as determined by the appended claims.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. A device of the character described including a supporting ladder, the upper rung of said ladder being tubular, a rod slidably mounted in said tubular rung, an inclined ladder having hooks connected to the inner edges of its sidebars at their upper ends, one of said hooks being adapted for engagement with the tubular rung, and the other of said hooks being adapted for engagement with the 'rod when in extended position.

2. A device of the character described comprising a pair of spaced parallel base bars, cross rods connecting said base bars at their opposite ends, a supporting ladder hingedly connected at its lower end "to said base bars, adjacent one end thereof, an inclined ladder having notches in the side bars thereof at theirlower ends, hooks connected to the inner edges of the side bars adjacent their upper ends, said notches being adapted for engagement, with one of said cross rods, and'said hooks being adapt ed for engagement with one of the. rungs of the supporting ladder, as and for the pur pose described. p

3. A device of the character described comprising a pair of spaced parallel base bars, said bars being connected at their opposite ends by cross rods, a supporting ladder having the lower ends of the side bars thereof hingedly connected to said base bars, sectional braces connected at one end to said base bars, and at their opposite ends to the side bars of said supporting ladder, the upper rung of said ladder being tubular, a rod slidably mounted in said tubular rung, an inclined ladderhaving hooks connected to the inner edges of its side bars at their upper ends, one of said hooks being adapted for engagement with the tubularrung, and

the other of said hooks being adapted for engagement with the rod when in extended position, as and for the purpose described.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

Erna H. Monnisou.

Witnesses:

WALTER M. Bosn, JOHN G. WELCH.

five cents each, by addressing the Commissioner of Eatents,

Washington, 1). G. Y r

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