US1477738A

US1477738A - Ladder scaffold bracket

Info

Publication number: US1477738A
Application number: US587603A
Authority: US
Inventors: Henry P White
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-09-11
Filing date: 1922-09-11
Publication date: 1923-12-18
Anticipated expiration: 1940-12-18

Description

Dem 18,1923. 1,4773% I H. P, WHITE- LADDER SCAFFOLD BRACKET Filed Sept. 11] 1922 an definitely appear from the detailed descrip- Patented Dee. l8, i923.

HENRY P. VHITE, O1? BENZONIA, MICHIGAN.

LADDER SCAFFOLID BRACKET.

Application filed September 11, 1923. Serial No. 587,603.

To all whom it may concern:

Be it known that I, HENRY P. WHITE, a citizen of the United. States, residing at Benzonia, county of Benzie, State of li lichigan, have invented certain new and useful Improvements in Ladder Scaffold Brackets, of which the following is a specification. 1

This invention relates to improvements in latter scaffold brackets.

The main objects of this invention are:

First, to provide an improved ladder bracket for supporting scaffolding which engages the ladder so that the strain is practically all upon the risers or side rails of the ladder.

Second, to provide an improved ladder scaffold bracket which is easily adjusted to support the scaffolding either atthe inside or on the outside of the ladder.

Third, to provide an improved ladder scaffold bracket which is very strong and at the same time comparatively light in weight.

Fourth, to provide a horizontal support for the scaffolding when the ladders are disposed at different angles of inclination.

Objects pertaining to details and economics of construction and operation will tion to follow.

I accomplish the objects of my invention by the devices and means described in the ,following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing forming a part of this application, in which:

Fig. I is a perspective view of a ladder scaffold bracket embodying the features of my invention, a portion of the ladder being shown to illustrate this adjustment or adaptation of the ladder thereto, the seaffold being indicated by dotted lines.

Fig. 11 is a perspective'view'of my improved ladder scaifold bracket mounted upon the inner or rear side of a ladder, a portion only of which is shown, and a portion of the scaffolding being shown by dotted lines.

Fig. HT is a perspective view of my improved ladder scaffold bracket removed from the ladder.

In the drawing similar reference characters refer to similar parts in all of the views.

Referring to the drawing, the ladder illustrated is of the usual type comprising side rails or risers 1 and rungs 2. My improved bracket comprises a pair of bracket members designated generally by the numerals 3 and l. The bracket member 3 comprises a pair of rearwardly diverging arms 5 adapted to embrace the side rails of the ladder and terminating in forwardly facing rail engaging hooks 6. The bills 7 of these hooks have rung engaging hooks 8.,

The bracket member 4? comprises a pair of rearwardly diverging arms 9 terminating in inward offsets 10 adapted to engage the front edges and inner sides of the rails and terminating in the downwardly facing rung engaging hooks 11. The ladder members have parallel portions 12 at their front ends, each having a series of holes 13 there in adapted to receive the bolt 14 by means of which they are pivotally and adjustably connected; This permits adjustment to bring one of the bracket members to a horizontal position so that it will support the scaffold as at 15 With the parts thus arranged the stress upon the bracket member 3 is a pulling stress and that upon the bracket member 9 is a thrusting stress. The bracket may be adjusted at either side of the ladder and the sea-Holding arranged on the bracket member which is horizontally supported according to the position of the bracket upon the ladder.

The bolt 14: and the plurality of holes 13 to receive the same permits the adjustment of the parts to compensate for the angle at which the ladder is placed and in either position the strain upon the ladder is supported mainly by the side rails, there being very little stress or strain upon the ladder rungs, and such as there is, is close to the rails, thereby lessening the liability of breakage.

l have illustrated and described'my improved bracket in a form which I have found very practical. I have not attempted to illustrate or describe other modificationsor adaptations which I contemplate as I believe the disclosure made will enable those skilled in the art to which my inven tion relates to embody or adapt the same as may be desired.

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

1. In a scaffold bracket, the combination of a pair of bracket members, each consisting of a pair of rearwardly diverging arms, the arms of one of said members being adapted to embrace the side rails of a ladder and terminating in forwardly facing rail engaging hooks the bills of the hooks having downwardly facing rung engaging hooks thereon, the arms of the other member having inwardly disposed angled offsets adapted to engaget-he front and inner sides of the ladder railsand terminating in downw'ardly facing rung engaging hooks, said arms having parallel portions at their front endswith bolt holes therein, and a bolt e11 gageable in said holes for adjustably and pivotally connecting said members, whereby one of the members may be supported to receive the scaffolding and the other to act as a strut therefor.

2. In a scaffold bracket, the combination of a pair of bracket members, each consisting of a pair of arms, the arms of one of said members being adapted to embrace the side rails of a ladder and terminating in forwardly facing rail engaging hooks, the bills of the hooks having downwardly facing rung engaging hooks thereon, the arms of the other member having inwardly disposed angled offsets adapted to engage the front and inner sides of the ladder rails and terminating in downwardly facing rung engaging hooks, and means for connecting the forward ends of said arms. whereby one of the members may be supported to receive the scaffolding and the other to act as a strut therefor. v

3. In a scafiold bracket, the combination of a pair ofbracket members, each consisting of a pair of rearwardly diverging arms, the arms of one of said members terminating in forwardly facing rail engaging hooks, provided with downwardly facing rung engaging hooks, the arms of the other member having angled offsets adapted to engage the front of the ladder rails and provided with rung engaging hooks, said arms having parallel portions at their front ends with bolt holes therein, and a .bolt engageable in said holes for adjustably and pivotally connecting said members whereby one of the members may be supported to receive the scaffolding and the other to act as a strut therefor.

4. In a scaffold bracket, the combination of a pair of bracket members, each consisting of a pair of arms, the armsof one of said members terminating in forwardly facing rail engaging hooksgprovided with downwardly facing rung engaging hooks, the arms of the. other member having angled offsets adapted to engage the front of the ladder rails and provided with rung engaging hooks and means for connecting the forward ends of said arms.

5. In a scaffold bracket, the combination of a pair of bracket members, each consisting of a pair of rearwardly diverging arms, the arms of one of said members having rail engaging hooks adapted to sustain a pulling stress upon the bracket members, thearms of the other member having rail engaging portions adapted to. sustaln a thrusting stress upon the member, the arms of both members havmgdownwardly facing rung engaging members thereon, said arms having parallel portions at their front ends with bolt holes therein, and ,abolt engageable in said holes for adjustably and pivotally connecting said members whereby one of the members may be supported to receive 1 the scaffolding and theotherfito act as a strut therefor. H I

6. In a scaffold bracket, the combination of a pair of bracket members each consisting of a pair of arms, the arms of one of said members having rail engaging hooks adapted to sustain a pulling stress, upon the bracket member, the arms of the Other member having rail engagingportions adapted to sustain a thrusting stress upon the member, the arms of both members having downwardly facing rung engaging member's thereon. l L I 7. In a scaffold bracket, the combination of a pair of bracket members, one of said -men1bers having rail engaginghooksadapted to sustaina pullingjstress upon-the memher, the other member having rail engaging portions adapted to sustain a thrusting stress upon the member, bothmembers having downwardly facing rung engaging mem-, bers thereon, and means for-connecting said members whereby one of the members may be supported to receive the, scaffoldingand the other to act as astruttherefor.

In witness whereof, I have hereunto set my hand nd seal.

HENRY P. WHITE. a s.]