US3037579A

US3037579A - Ladder attachment

Info

Publication number: US3037579A
Application number: US79819A
Authority: US
Inventors: William H Barrow
Original assignee: Individual
Current assignee: Individual
Priority date: 1960-12-30
Filing date: 1960-12-30
Publication date: 1962-06-05
Anticipated expiration: 1979-06-05

Description

June 5, 1.962 w. H. BARROW 3,037,579

LADDER ATTACHMENT Filed Dec. 30, 1960 ATTORNEYS Patented June 5, 1962 3,037,579 LADDER ATTACHMENT William H. Barrow, 803 N. 15th Ave., Laurel, Miss. Filed Dec. 30, 1960, Ser. No. 79,819 1 Claim. (Cl. 182107) This invention relates to a ladder attachment and constitutes an improvement over my co-pending application Serial No. 50,414 filed August 18, 1960, entitled Ladder Attachment.

A primary object of the invention is the provision of such an attachment which may be readily attached to the rung of a ladder or the like so that the same may be leaned or placed against a pole or tree or similar object and secure it against lateral slippage or displacement.

An additional object of the invention is the provision of a device of this character which will readily fit a variety of sizes of similar cylindrical objects and which may be readily attached to both the ladder and the object against which it is positioned with a minimum of eflort and difliculty.

A more specific object of the invention is the provision of a device of this character which includes a pair of hinged clamping members secured to a plate, the hinged clamping members being adapted to be secured about the rung of a ladder, and the plate having an indentation or cutaway portion which is adapted partially to surround the trunk of a tree or a pole or similar object.

A more specific object of the invention is the provision of such a device provided with a rubber ring partially encircling the cutout portion to insure against slippage.

Still another object of the invention is the provision of such a device which may be attached to the rung of a ladder, and a tree or pole or the like with a minimum of time, effort and difiiculty.

Still other objects reside in the combinations of elements, arrangements of parts, and features of construction, all as will be more fully pointed out hereinafter and disclosed in the accompanying drawing wherein there is shown a preferred embodiment of this inventive concept.

In the drawing:

FIGURE 1 is a perspective view taken from the rear of the attachment of the instant invention shown as applied to the rung of a ladder and resting against a cylindrical object such as a pole.

FIGURE 2 is a sectional view taken substantially along the line 2-2 of FIG. 1 as viewed in the direction indicated by the arrows.

FIGURE 3 is a sectional view taken substantially along the line 3--3 of FIG. 1 as viewed in the direction indicated by the arrows; and

FIGURE 4 is a sectional view taken substantially along the line 4--4 of FIG. 1 as viewed in the direction indicated by the arrows.

Similar reference characters refer to similar parts throughout the several views of the drawing.

Referring now to the drawings in detail, and more particularly to FIG. 1, there is generally indicated at T a pole or tree or the like against which it is desired to support a ladder L, the ladder including rungs R. The device of the instant invention is generally indicated at 10, and comprises a plate 11 having a central arcuate cut-out portion 12 on one side thereof. The extremities 12a of cut-out portion 12 are cut at a 45 angle to permit the ladder carrying the device to be leaned against the corner of a building. The cut-out portion is preferably provided with a rubber half gasket 13 to prevent slippage, which gasket may be comprised of a section of garden hose or the like slid along one edge and fitted into the circular cut-away portion. The rear end plate 11 is arcuately curved upwardly as shown at 14, and thence downwardly at 15, and is provided at its opposite ends with a hinge barrel 16, which engages between the interlocking hinge barrel portions 17 of a pair of arcuate clamping plates 18, the assemblies being held in position by means of hinge pins 19.

Each hinge plate 18 is provided with a slot 20, and a downwardly arcuate terminal portion 21, the slots being adapted for the accommodation of clamping bolts 22 having heads 23 which are retained against disengagement with the slots 20 by the arcuate lip or down turned portion 21. Clamping bolts 22 extend through suitable openings 24 in plate 11, and are held in position by means of wing nuts 25.

A loop or eye 26 is secured centrally to the rear portion 15 of plate 11 as by welding 27 or the like, and has secured thereto a tie rope 28, which, as best shown in FIG. 1, is adapted to encircle the pole or tree trunk, and be tied as at 29 firmly to secure the device to the pole. In clamping the device to the ladder, loosening of the wing nuts 25 permits the heads 23 of bolts 21 to be disengaged from slots 20, the clamping plates 18 to be swung about hinge pins 19 to a position where they may be readily positioned about the rung R of the ladder. The bolts 22. are then re-enegaged in slots 20, and the wing nuts 25 tightened securely to hold the parts in related assembly.

From the foregoing it will now be seen that there is herein provided an improved ladder attachment, which accomplishes all the objects of this invention, and others, including many advantages of great practical utility and commercial importance.

As many embodiments may be made of this inventive concept, and as many modfiications may be made in the embodiment hereinbefore shown and described, it is to be understood that all matter herein is to be interpreted merely as illustrative, and not in a limiting sense.

I claim:

An attachment for ladders comprising a plate having an arcuate cut-out portion in one edge thereof, the edge of said plate opposite said cut-out portion being arcuately curved in a direction perpendicular to said arcuate cutout and adapted to substantially encircle a ladder rung, hinge barrels secured to said arcuately curved edge at the opposite ends thereof, a pair of oppositely arcuate clamping plates each having a hinge barrel adapted to interlock with the hinge barrel at the opposite ends of the arcuately curved edge portion of said plate, pin means holding said hinge barrels in interlocked relation to pivotally connect said clamping plate to said first-mentioned plate, the free ends of said clamping plates having portions defining slots extending inwardly from the edge thereof, headed bolts extending through said first-mentioned plate and into the slots in said clamping plates adapted to releasably clamp a ladder rung between said clamping plates and said arcuately curved edge portion, a loop member secured to the center of said arcuately curved edge of said plate, a tie member secured to said loop member and adapted to engage an upright support against which said attachment is placed, an anti-slip 3 4% gasket secured to the rim of said arcuate cut-out portion, 683,527 Upthegrove Oct. 1, 1901 the edges of said clamping plates having said portions 1,206,574 Miller Nov. 28, 1916 defining slots therein being arcuately curved in a direc- 1,593,366 Singer July 20, 1926 tion opposite to the initial curvature thereof to define a. 1,920,552 Dollerhide Aug. 1, 1933 bolt head, restraining flange portion to preclude slippage 5 2,237,596 Eilers Apr. 8, 1941 of said bolt out of said slot defining means. 2,710,129 Telech June 7, 1955 2,808,975 Palmquist Oct. 8, 1957 References Cited in the file of this patent FOREIGN PATENTS UNITED STATES PATENTS 10 848,245 Germany Sept. 1, 1952 363,483 Ramsey May 24, 1887 926.633 Germany Apr. 21, 1955