US1109100A

US1109100A - Car-ladder.

Info

Publication number: US1109100A
Application number: US71852812A
Authority: US
Inventors: George L Allen
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-09-04
Filing date: 1912-09-04
Publication date: 1914-09-01
Anticipated expiration: 1931-09-01

Description

G. L. ALLEN.

CAR LADDER.

112110111011 FILED 513F114, 1912. I 1,109,100. Patented Sept.1,1914. 2 SEEETSSHEE1 1. 1 7 /5- I i \6 W 'L J/ .r'

Q/Vihwono mm" I GQL. ALLEN.

GAR LADDER.

APPLICATION FILED SEPT. 4, 1912.

Patented Sept. 1, 1914.

2 $HBETS-SHEET 2.

WWmeoog o GEORGE L. ALLEN, OF WILMINGTON, NORTH CAROLINA CAR-LADDER.

Specification of Letters Patent.

Patented Sept. 1', 1914.

Application filed September 4, 1912. Serial N 0. 718,528.

To all whom it may concern Be it known that I, GEORGE'L. ALLEN, a citizen of the United States, residing at \Vilmington, in the county of North Hanover, State of North Carolina, have invented certain new and useful Improvements in Can Ladders, of which thefollowing is a descr1p= tion, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to an improved form of car ladder, and more particularly to that class of car ladders such as are used on box cars. The objectof the present invention being to supply a ladder of simple design, economical in its construction and superior to those forms such as are now used.

IYith the above and other ends in view the invention consists in the construction, combination and arrangement of parts as herein described, illustrated in the accompanying drawings and claimed in the'clauses of the concluding claim.

In the drawings Figure 1 illustrates a front view of my improved form of ladder attached to a freight car. Fig. 2 is a side View of the same. Figs. 3, 4, 5, 6, and 7 illustrate two forms of supporting brackets. Fig. 8 'is a top sectional view of my ladder. Figs. 9 and 10 are views of a modified form of rung.

My improved form of ladder is composed of two side members or stiles 1. These stiles are made from what is commercially known as angle iron. Holes 2 for the rungs 3 to fit into and holes at for the bracket bolts 5 to extend through are drilled or gang punched in the above mentioned angle irons and by my particular construction all these holes occur, or are designed to occur, in a single leg of the angle iron, thus in the construction of these stiles the. angle iron is sheared to the proper length and the holes gang punched in a single operation.

The rungs 3 are made of round bar iron, having a long straight portion which is the rung proper, near the end of said rungs a.

portion 8 is bent inward and it is this portion that extends through the holes 2 formed in the stiles,.the small portion 9 which extends beyond the hole 2 of the stiles 1 is then bent outward against the inner face of said stiles, all of which is clearly illustrated in Fig. 8. I

In assembling the stiles and the various rungs thereon the two angles are so placed with relation to each other and the car wall that the legs of the angles parallel to the car tion being that there is no dangerofwedg ing should a person's foot slipalong one of the rungs as often occurs in climbing upon ladders of this class.

In Figs. 9 and 10 there is illustrated a modified form of rungwhieh has the advantage that it can be attached to the stiles after the ladder has been attached in position upon the car wall. In this form of rung the portion 9 which extends downward through the stile is bent upward and in a line perpendicular to the plane formed by the main rung portion and the downward extending portion 8. In order to attach one of these rungs it is only necessary to slightly tip the rung in order to he slid into position, and having once been placed into position it is given a slight extra set in order to securely clamp it to the stile.

A bracketdesigned to attach the ladder to the car wall is shown in front and side view in Figs. 3 and 4 respectively, this partieular bracket is adapted to fit within the acute angle formed by the two legs of the angle iron, the said bracket is provided with a bolt hole extending therethrough to thereirons and does not require any extra wall space other than is necessary for the ladder proper.

I wish to emphasize the advantages of having all the holes necessary for the ladder construction in one leg of the angle iron side members for by so designing it is possible to punch them in one operation and furthermore that leg of the angle which in the present instance sustains the bending moment similar to the web in an eye beam, has no holes therein and whose area is accordingly not decreased thereby;

Having thus described my particular form of car ladder what I wish to claim as new and original with me is:

1, A car ladder comprising a pair of stiles each consisting of a strip of angle iron having one part parallel with the surface against which the ladder is placed and the other part at an angle to said surface, the latter part being arranged with its free edge against said surface and serving to hold the parallel part of the angle iron away from said surface, said parallel parts being provided with rung openings and openings for the bolts of the securing brackets, rungs having their ends in said rung openings, su porting brackets bearing at their outer en s 5 against the parallel parts of the angle irons,

and securing bolts extending through the openings in the parallel parts of the angle irons and through the brackets.

2. A car ladder comprising a pair of stiles each consisting of a strip of angle iron having one part parallel with the surface against which the latter is placed and the other part at an angle to said surface, the

latter part being arranged with its free edge against said surface and serving to hold the parallel art of the angle iron away from said sur ace, said latter parts being on the inner edges of the parallel parts, said parallel parts being rovided with rung openings and openings or the bolts of the securing brackets, rungs having their ends in said rung openings, supporting brackets bearing at their outer ends against the parallel parts of the angle irons, and securing bolts extending throu h the openings in the parallel arts of t e angle irons and through the rackets. A

This specification signed and witnessed this 19th day of July A. D. 1912.

GEORGE L. ALLEN.

In the presence of- R. HUNT, C. L. MnIs'rER.