US593677A

US593677A - Henry neddermann

Info

Publication number: US593677A
Authority: US
Publication date: 1897-11-16
Anticipated expiration: 1914-11-16

Description

(No Model.)

H. NEDDERMANN.

PAINTERS SGAPFOLDING. No. 593,677. Patented Nov, 16,1897.

WITNESSES INVENTOR ATTO R NEYS .UNITED STATES PAT NT Urrrcn.

HENRY NEDDERMANN, OF NEW YORK, N. Y., ASSIGNORTO BERTHA NEDDERMANN, OF SAME PLACE.

PAINTERS SCAFFOLDING- SPECIFICATION forming part of Letters Patent No. 593,677, dated November 16, 1897.

Application flled M91011 11, 1897. Serial No. 627,013. (No model.)

This invention relates to that class of painters scaffolding which embodies a suspended ladder or platformadapted to be adjusted vertically.

The objectof my invention is to provide a simple and improved scaffolding of this character which can be effectively and safely locked in position at any desired point, whereby positive position and the safety of the workingman is insured. 1

In the drawings,Figure 1 is an end elevation showing my improved adjustable scaf-' foldin g apparatus in position upon abuilding.

Fig. 2 is acorresponding front elevation.

Referring to the drawings, A designates the ladder or platform, which is suspended upon ropes a and pulleys a, depending from top supporting beams or brackets a The foregoing mechanism may be of any usual or adapted construction and mounted in any ordinary manner.

B designates guide-rods comprised in my invention, which are adapted to be secured in vertical position with relation to the front or base of the building and are arranged in parallel position, as shown in Fig. 2, and mounted with respect to' the ends of the ladder or platform A. The vertical guide-rods B are carried upon brackets 0, adapted to be secured in the window-openings of the building, preferably upon the base or sill. These brackets embody a right-angular main portion 0, the

' arms of which, a and 0 respectively bear upon the top or outer edge of the windowsill. The top arm 0 projects inwardly at the 1 window-opening, and upon its inner end is mounted a downwardlyextending arm 0 adapted to bear against the inner edge or face of the window-sill. The bracket. is thus securely mounted in position upon the Windowsill and embraces both the outer and inner faces of the same, so that accidental displacement or movement in either direction is obviated; The inner retaining-arm c is adj ustably mounted upon the top arm 0 to adapt the device for effective use in connection with the various sizes of sills,'this adjustable connection being preferably formed by having the arm 0 in sliding connection with the arm 0 and provided with a set-screw d, by which it may be secured in adjusted position. The vertical guide-rods B are preferably cylindrical and pass through a corresponding opening in the front arms 0 or front portion of the retaining-bracket O and are vertically adjustable therein by means of the set-screw d. The front face of the outerarm c of the supporting-bracket is preferably provided with a concaved channel 0 within which rests the vertical guide-rod B, by which construction a braced and more secure connection is formed.

In the operation of the apparatus the ladder or platform A may be vertically adjusted by means of the suspending-rope a, as desired, and when in the desired relative position it may be secured or fastened to the guide-rods B by means of a rope or loop E at any point upon said rods to safely and efiectively retain it in'its adjusted position.

Having thus described my invention, what I claim 'as new, and desire to secure by Letters Patent, is

1. In a scaffolding of the class described, the combination, with the ladder or platform suspended upon ropes, of the vertical guiderods mounted with relation to the front of the building or other surface, the supportingbrackets carrying said guide-rods and embodyingthe right-angular main, portion having the top arm anddownwardly-projecting outer arm and the downwardly-extending inner arm adjustably mounted upon the top arm, and means for connecting the suspended ladder or platform with the guide-rods, substantially as and for the purpose set forth.

2. An improved scaffolding of the class described, comprising the supporting-brackets adapted to be secured upon the sills of the Window-openings of a building and embodying a right-angular main portion having the inwardly-projecting top arm and the downwardly-extending outer arm and the downwardly extending inner arm adjustably mounted upon said top arm, and vertical guide-rods mounted with relation to the front of the building and adjustably connected With the outer portion of the supportingbrackets, in combination with a suspended ladder or platform having a vertical adjustment with relation to said guide-rods, and means for connecting the platform and rods, substantially as and for the purpose set forth.

3. An improved scaffolding of the class described, comprising the supporting-brackets adapted to be secured to the sills of the window-openings of a building and embodying the right-angular main portion having the inWardly-extendin g top arm and downwardlyprojecting outer arm and the downwardlyextending inner arm having a sliding connection upon the top arm and provided with the adjusting set-screw, the outer portion of said HENRY NEDDERMANN.

Witnesses:

O. SEDGWICK, M. G. MAoLEAN.