US2200902A

US2200902A - Ladder

Info

Publication number: US2200902A
Application number: US239077A
Authority: US
Inventors: Harry A Solomon
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-11-05
Filing date: 1938-11-05
Publication date: 1940-05-14
Anticipated expiration: 1957-05-14

Description

y 14, 1940- H. A. SOLOMON 2,200,902

LADDER Filed Nov. 5, 1938 2 Sheets-Sheet 1 In venior Harry SB owwh .4Hornvys May 14, 1940- H. A. SOLOMON LADDER Filed NOV. 5, 1938 2 Sheets-Sheet 2 T o t n C m I Harry A. S'o/orhon Attorneys Patented May 14, 1940 'UNITED STATES PATENT OFFICE manna Harry A. Solomon, Syracuse, N. Y. Application November 5, 1938, Serial No. 239,017

1 Claim.

This invention appertains to new and useful improvements in ladders and more particularly to ladders which can be used or rested against smooth surfaces which would ordinarily result in the slipping of the ladder.

An important object of the invention is to provide a ladder structure which will not mar polished surfaces against which the upper end of the ladder is rested.

Another important object of the invention is to provide a ladder which will not only prevent marring of the surfaces against which the same is rested, but which will also prevent slippage of the ladder while in use.

These and other important objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 is a perspective view of the ladder showing the suction cup employed.

Figure 2 is a perspective view of the ladder showing the suctioncup out of use.

Figure 3 is a perspective view of the ladder slightly modified.

' Figure 4 is a perspective view of another form of ladder.

Figure 5 is a modification of the suction cup means.

Referring to the drawings wherein like numerals designate like parts, it can be'seen in Figures 1 and 2, that the ladder consists of vertical runners 5-5 connected by the rungs 6 and that the upper ends 0115 the runners 5 are curved rearwardly as at l and are provided with resilient caps l which will engage any surface against which the ladder is placed without marring the surface and at the same time preventing slippage of the ladder.

At the upper ends of the runners 5 are the suction cups 9-9 each of which is provided with a 'U-shaped bracket Ill whichis pivotally connected as at H to the upper end of the corresponding runner. Thus these vacuum cups can be thrown into position to be usedagainst a surface or swung out of position as shown in Figure 2 so that only the caps 8 engage the surface against which the ladder is to rest.

The lower ends of the runners I are likewise provided with resilient caps l2.

It may be desirable to use the suction cups in the form of extensible sections and in this instance the runners 5 will be hollow and there will be used in conjunction therewith a section l3 which can be slidably disposed into the runner 5 and which will have openings l4 therein as will the runner so that a pin or key can be disposed through the openings of the runner and section l3 to hold the section I3 in proper extended position. 10

The section i3 is provided with a. resilient cap l5 and a suction cup it having the U-shaped bracket I1 is used in a similar manner. the bracket I! being pivotally secured as at l8 to the outer end of the section l3.

Figure 3 shows a slightly modified form of the invention wherein the runners 5'5' are connected in the same manner by rungs 6, but in this form only the caps 8 are provided at the upper ends of the runners 5'. The suction cup 20 i9 is provided with the U-shaped bracket which is pivotally secured as at 2| to the protuberance 22 which extends from the uppermost rungs 6'.

Another form is shown in Figure 4 wherein the runners fizz-5a are connected by the rungs 6a, but in this form the runners 5a are connected at their upper ends in the form of an arch from which projects the member 23 to which the bracket 24 of the suction cup 25 is. pivotally secured as at 28.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without deg5 parting from the spirit and scope of the invention as claimed hereinafter.

Having described theinvention, what is claimed as new is:

A ladder comprising a pair of runners having aperturecl top end portions, rungs between the runners, resilient caps mounted on said top end portions, substantially U-shaped members pivotally secured to said apertured end portions rearwardly of said resilient caps and adapted to swing over said caps, and suction cups secured at their center to said U-shaped members for holding the ladder against slipping when in use.

BARRY A. SOLOMON.