US1823509A

US1823509A - Replaceable ladder rung

Info

Publication number: US1823509A
Application number: US350338A
Authority: US
Inventors: Spencer M Peters; Arthur B Rochester
Original assignee: Peters
Current assignee: Peters
Priority date: 1929-03-27
Filing date: 1929-03-27
Publication date: 1931-09-15
Anticipated expiration: 1948-09-15

Description

' P 1931. s. M. PETERS ET AL 1,823,509

' REPLACEABLE LADDER RUNG Filed March 27, 1929 BY mam (M Patented Sept. 15, 1931 UNITED STATES PATENT OFFICE SPENCER M. PETERS AND ARTHUR B. ROCHESTER, OF SPRINGFIELD, ILLINOIS; SAID ROCHESTER ASSIGNOR T SAID PETERS REPLACEABLE LADDER RUNG Application filed March 27, 1923. Serial No. 350,338.

Our invention relates to ladder rungs of firm and substantial construction; an object being in this device to provide a ladder rung neat in appearance, easily and quickly mounted, or detached, easily replaceable in any ladder, economical to manufacture, as well as strong and durable when in normal use.

We attain the. objects of our ladder rung 0 in the device described in the annexed specification, recited in the claims and illustrated in the accompanying drawings in which like reference numerals indicate like parts in the several figures. a

Referring to the figures:

Figure 1- is a vertical half section of one of-our ladder rungs shown in a manner in which it is attached to the ladder stiles on which it is operatively supported.

Figure 2 is a perspective of one of our ladder rungs.

Figure 3 is a perspective of a portion of a ladder showing our rung as it appears in operative position secured to the stiles of a ladder. c I

Figure 4 is a cross section of our rung showing the structural detail of an end show ing the manner in which it fits against a ladder stile to which it is adapted to be bolted.

Referring now in detail to the construction of our ladder rung and the preferred manner of assembling and using the same we provide as an integral structure, a channel bar bent into the form of a U bar with the inner portion of the channel turned to the inside to form a relatively short angle 1- and 2 of the main body -3 of our rung.

At the respective ends of the U turns are integral spurs 4- and 5 outwardly turned and adapted to normally pierce the inner faces of the respective ladder stiles -6 and 7.

Each of these U turns is provided with a bolt hole 8 or -9 respectively through which

bolts

10 and 11 are secured in anchoring the rung substantially to ladder stiles 6 and -.-7 as shown in Figure 1.

Our ladder rung is adapted to be successfully operative on almost any style of ladder in ordinary use and possesses special merit in its design of construction which enables it to be quickly and conveniently put on or taken off of a ladder without materially disturbing the other rungs of the ladder.

Spurs 4 and -5- of our rung hold the ladder rung substantially in operative position without turning while the manner of guarding nuts -12 and 13 on bolts 10 and 1l in between channel flanges -14-14- and 1515 of channel bar 1 is a substantial and practical manner of holding the nut in place from turning.

It will also be observed that additional' strength is obtained in the structure of our rung by turning the channel side of the rung to the inside.

An addition merit in our rung is also found in the substantial bracing surface provided at each end of the rung where the angles turn at the end and fit snugly up against the inner faces of the stiles of the ladder. This bracing surface of the rung held as it is so firmly by bolts 10 and -1l extending through the

stiles

6 and 7 provide an efiective means of holding the ladder to which the rung is attached well braced tending to reduce to a minimum the weaving; so commonly found in ladders after they have been used for a short period of time:

It may be possible to change, somewhat, certain minor details in the structure of our ladder rung without departing from the spirit and scope of our invention.

Having thus described the nature of our invention, what we claim is:

As a new article of manufacture a ladder rung formed of a Ushaped channel bar whose' ends are bent at right angles to the intermediate body so as to bring the sides of the channel on the inside of the curve at the bend said bent ends forming integral brackets to be secured to ladder stiles and each provided with a bolt hole; said sides of the channel on said brackets adapted to provide holding means to prevent a bolt head or nut from turning when fitted therebetween; said bentends of said channel bar each provided with an integral outwardly extending terminal spur adapted to pierce the inner face of a ladder stile When in normal use.

5 In Witness whereof, We hereunto set our hands this 25th day of March, 1929.

SPENCER, M. PETERS. ARTHUR B. ROCHESTER.