US400008A

US400008A - Extension-ladder and scaffold attachment

Info

Publication number: US400008A
Authority: US
Publication date: 1889-03-19
Anticipated expiration: 1906-03-19

Description

(No Model.)

I. H. RASOR.

EXTENSION LADDER AND SCAPFOLD ATTACHMENT.

Patented Mar. 19, 1889.

him m TH w M A .2 A A Z S1 W HwEssEs' 7%? 0%) 12,

' lVadswoi-th, in the county of Medina and NITED STATES tries.

ATENT IRA I-I. RASOR, OF W'ADSIVORTII, OHIO.

SPECIFICATION forming part of Letters Patent No. 400,008, dated March 19, 1889.

Application filed May 9, 1888. Serial No. 273,286.

To aZZ whom it may concern.-

Be it known that I, IRA l-I. RASOR, a citizen of the United States of America, residing at State of Ohio, have invented certain new and useful Improvements in Extension-Ladder and Scaffold Attachments, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention pertains to certain new and useful improvements in extension-ladders, having for its object the provision of simple and highly-efficient means for extending and rigidly securing each section of the ladder at the desired point, and also to provide anew and improved form of bracket for supporting one end of a scaffold used in painting or repairing a building, and to provide for securing said scaifold either in front or back of the ladder.

The invention therefore comprises the detail construction, combination, and arrange- .ment of parts, substantially as hereinafter fully set forth, and particularly pointed out in the claim.

In the accompanying drawings, Figures 1 and 2 are front elevations of my improved ladder, and Figs. 3, 4, and 5 are detail perspective views.

Referring to the drawings, A designates myimproved ladder, composed of three sections, a a a the width of each section being correspondingly diminished, so as to fit between the side barsof the next'adjoining section, as shown.

To the inner sides of the side bars of the sections a a, near their upper ends, are secured right-angular clamping-plates I) B, the outer portions of which project inwardly. The side bars of the section a are designed to be held by the clamping-plates B of the section a, while the side bars of the upper smaller section, (0 are held by the clampingplates B of the middle section, a, as shown.

To the lower round or cross-bar of the sec tions a a are loosely secured hooks O C, designed to hook over and enclasp the adjacent round of the adjoining section, as shown, whereby the sections a a are held as against accidental movement downward, the outward movement being prevented by the clamping- (No model.)

plates B B, as is obvious. To the upper round of the section a are secured two small rollers, Z) I), designed to rest against the wall of the building to which the ladder is placed. D is a bracket of improved construction for securing the end of a scaffold either in front or back of the ladder. The same consists of two divergent arms, (Z d, and a single central arm, (Z'. The outer divergent ends of the arms (Z d have oppositely-proj ectin g hooks d (1 while the single arm (1 has a single hook, d, as shown. The meeting ends of these arms are provided with apertures (1 through which is inserted a securing-bolt, E, whereby the bracket can be adjusted to occupy the desired plane.

In practice, to secure the bracket D to the front of the ladder the hooks d are caused to engage or rest upon one of the rounds of the ladder-section, and the hook d of the single arm d is moved to one end of one of the upper rounds, and after being caused to enclasp the same it is moved to the center of said round, which, being of greater dimensions at this point than at its ends, prevents the slipping off of the hook. Thus secured, when the ladder is placed against the side of a house the single arm (Z will occupy a horizontal position, and upon it is designed to be placed the end of a scaffold-board, E, secured at its other end by a duplicate of this ladder. Upon this scaffold a painter or carpenter can stand, whereby he is able to easily perform his Work. The scaffold is generally first secured in place and the sections of the ladder are extended to the desired height. WVhen the scaffold is to be used by a sign-painter, the bracket D is attached to the rear of the ladder by reversing the position thereof an d causing the hooks d of the arms (1 to engage an upper round and the hook of the arm (1 to engage alower round, as shown in Fig. 2.

One of the many advantages of my invention is that it permits the sections of the ladder to be raised or lowered while the scaffolding is supported thereby, and it will also be seen that my invention embodies advantages in points of simplicity, durability, general efficiency, and inexpensiveness.

. I claim as my invention- The combination, with an extensible ladder, of the bracket herein described, having In testimony whereof I :rlfixmy sigrmture in the two divergent arms provided with outer presenee of two Witnesses. doub1e-hooked en ds and apertures at their inner ends, the single arm having an outer IRA 11'. RASOR. 5 hooked end and a series of apertures at its inner end, and the bolt passed through coin- \Vituesses:

eid ent a iertures of the series thereof in said FRANKIJN \V. KREMER,

arms, suhstzmtially as shown and described. l JOHN A. CLARK.