US1570240A - Ladder - Google Patents

Description

` B. GIUSTINO LADDER Filed March 23, 1925 nuento@ Cttoamq 'lJVNIfTED"ST'IIE'LS PATENT OIi`fFI,C'I.".'.'Ql

Patented Jan. 19, 1926.

- Basso GrUs'rINo, or BALTIMORE, MARYLAND.

LADDER.

Application Afiled March 23, 1925. Serial No. 17,647. I

T0 all whom t may concern.'

Be it known that I, Basso GiUsTrNo, a citizen of the United States, residing at Baltimore, State of Maryland, have invented certain new and useful Improvements in Ladders, of which the following is a speciication.

The present invention relates to a ladder for painters and the like and for its principal object aims to provide a structure which may be used in place of scaffolding, so that it will provide a platform upon which thev painter may stand, while at work.

It is evident that the device is capable of being eliciently used in numerous other ways.

Another very important object of the invention is to provide a ladderstructure of this nature which may be folded into a comparatively flat condition, so as to be easily stored and carried about.

Another very important object of the invention is to provide a structure of this nature, which is strong, durable, easy to manipulate, reliable, not liable to readily get out of order, and otherwise well adapted for the purpose for which it is designed.

IVith the above and numerous other objects in view, as will appear as the description proceeds, the invention resides in certain novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing:

Figure 1 is a side elevation of the structure, embodying features of my invention, showing parts broken away.

Figure 2 is a vertical section therethrough, taken substantially on the line 2-2 of Figure 1, looking in the direction of the arrows, and

Figure 3 is an enlarged detail section, through a portion of the device.

Referring to the drawing in detail, it will be seen that the numerals 1 designate the standards of the front frame having a plurality of spaced parallel rungs 2, the uppermost rung being situated a distance below the upper terminals of the standards. The

prop frame includes a pair of standards 3 Aheld in parallel spaced relation by rungs 4.

The upper ends of the standards 3 are hingedly engaged with the intermediate portions of the standards 1 adjacent the uppermost rung 7 The hinges which join fixed to the standards 1 and plates 6 which are fixed to the standards 3, these plates being pivoted together as at 7, and provided the standards 1 and arev indicated bythe if .letter H, and include plates v5 which are at their pivoted ends with abutments 8 so j that the angular disposition of the front frame and the top frame is limited to the extent shown in Figure 1, whereby it will be seen that when in this position, they cannot be further spread apart, but the'prop frame can be swung toward the front frame when the structure is not in use. The rear frame comprises standards 9, held in parallel spaced relation by a plurality of rungs 10, the intermediate one of which is disposed in substantially the horizontal plane with the uppermost rung 2 of the front frame, so that a platform 11 may be rested on these two last mentioned rungs, notches 12 being provided in the platform so as to prevent creeping of the platform on the rungs. The lower ends of the standards 9 are notched, so. as to be engaged on the lowermost rung 10 of the prop frame. Chains 13 connect the upper ends of the standards 1 and 9 of the front and rear frames respectively. A brace 14 is pivotally engaged with the intermediate portion of the undersurface of the platform, as at 15, and has its free ends projecting in opposite directions from each other for being detachably engaged in members 16 on the standards 9 below the platform, thereby preventing swinging movement of the rear frame in relation to the platform.

From the above detailed description, it will be seen that I have provided a knock down structure which may be easily and readily assembled and disassembled. It will be apparent that the present embodiment of the invention has been described merely by way of example, and that numerous changes in the details of construction, in the sizes, in the materials, and in the combination and arrangement of parts may be resorted to, without departing from the spirit or scope of the invention as hereinafter claimed, or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is:

In combination, a front frame, a prop frame, a rung for hinging the prop frame at its upper end to an intermediate portion of the front frame, means for limiting the swinging movement between the two frames, a rear frame having its lower end detachably engaged on a lower intermediate portion of the prop frame, a platform detachably engaged With the rear frame and restable on the rung, a brace pivotally mounted on an intermediate portion of the platform and detachably engaged With the rear frame, sockets carried by the rear frame, said brace including an intermediate portion pivoted to the platform, and side portions curved ecoentrically so that their intermediate portions meet7 and their ends extend in opposite directions in substantial alignment with each other for engagement With the sockets, whereby in order to engage the ends with the sockets it is necessary to distort the intermediate portions of the side portions in order that they may pass by each other.

In testimony whereof I affix my signature.

BASSO GIUSTI'NO.

Images