US936219A - Ladder. - Google Patents

Description

J. COPLINKY.

LADDER. l APPLIOATIGN'FILED HAB.. 20, 1909.-

Patented oet. 5,1909.

JOSEPH COLINKY, OF HARRISBURG, PENNSYLVANIA.

Specification of Letters Patent.

LADDER,

Patented Oct. 5, tm.,

Application filed March 20, 1909. Serial No. 484,614'.

To all whom it may concern.:

ABe it known that l, Josnrn (loPLiNiiY, a citizen of the United States, residing at llarrislmrg, in the county of Dauphin and State of Pennsylvania, have invented new and useful Iniprovements in Ladders, of which the following is a-specieation.

This invention relates to ladders and particularly to an attaclnncnt for ladders to prevent the saine from slipping and falling when arranged and supported for use.

The main object of the invention is to provide simple and effective means adapted to engage the ground or surface on which the base of the ladder rests to hold the latter firmly from movement, which means may be folded t'o an inoperative position when the ladder is used interiorly to prevent-marring of the floor, or to permit the ladder to be stored in close compass when not in use.

A further objectof the invention is to provideholding means of the described character which may be applied to ladders already in use.

The invention consists of the features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being had to the accompanying drawings, in which Figure 1 is a front View of the attachment showing the projected and folded positions of the parts in full and dotted lines. Fig. 2 a side view of a ladder showing the application of the invent-ion thereto. Fig. 3 is a. rear elevation of the same.

Referring to the drawing, the numeral l designates the side bars of a ladder to which my invention is shown applied, an anti-slip# ping or holding device being applied to the lower end of each of said bars. Each holding device comprises an attaching bar or plate Q provided with a series of'openings 3 for the passage of screws or other suitable fastening' devices t to secure the same vertically upon the inner or rear face of each bar, or that face which lies adjacent the wall or other structure from which the ladder is supported in use. The lower end of the bar or plate 2, which constitutes a fastening bracket, terminates above the lower end of the bar l and is provided with central, lateral pivot supports 5 for a pair of bracing arms 6, which latter are adapted to be swung below or above their pivots, asA shown in full and dotted lines in Fig. l, and are formed with inwardly curved lower ends 7 terminating in spurred or pointed extremities S to enter the ground or surface on which the ladder rests to hold the same against lateral or sidewise movement. The arms G are formed with beveled or inclined lugs or shoulders 9 which are adapted to be engaged by the lower beveled or Vfshaped ends of a pair oflocking arms, dogs or detents l0, pivoted at their upper ends to the sides of the bracket i). above the bracing arms as shown at ll, the construction being such.

that when the arms (5 are projected the arms l0 may be swung downward into locking engagement therewith to hold the said arms 6 from outward and upward movement, thus insuring the firm embedment of the pointed ends S in the ground and the secure retention of the ladder against sidewise movement.

In order to hold the ladder against outward movement from the wall or other support against which it rests, a retaining or anchoring arm l2 is provided and pivotally connected at one end, as shown at 13, to the outer or rear face of the bracket 2 near the lower end of the latter. rl `his arm is adapted when the ladder is arranged for use, as shown in Fig. 2, to be swung downward to the position illustrated in full lines to bring its opposite or free end, which is provided with a spur or hook le, into engagement with tn e ground between the ladder and wall or lother supportiiig element, so that said spur or hook may be forced into the ground to prevent the lower end of the ladder from slipping outwardly with relation to said wall or element. Hence by the use of the bracing and anchoring arms, the ladder may be firmly and securely held from slipping or shifting in any direction, so that it can not possibly fall.

The holding devices are more especially adapted for use when the ladder is canployed for exterior work, but they may also be used when the ladder is used for interior work where the base surface on'which the ladder rests is of a nature to permit the bracing and anchoring:r arms to obtain an anchoring engagement. lvl/*hen the ladder is rested on a floor' or other surface, the arms may be swung upwardly to the dotted line positions shown in order to prevent marring of the -tioor and adjacent woodwork. rEhe folded positions of the arms will lso permit the ladder to be packed or stored in close compass without interference therefrom. lt will Cri 'being pivotally mounted upon an att-aching brac et, it will be understood that they may be mounted directly upon the bars l in equipping a new ladder with the invention. The construction disclosed, however', permits of the application of the invention to ladders already in usei'or the purpose of preventing the same ilrom slipping, and it will be appar- 'ent that the invention is exceedingly effective yfor this purpose and is susceptible of manufacture aud sale at a comparatively low cost.

Having thus 'fully described the invention, what is claimed as new, is v l. The combination with a ladder, of bracing arms pivoted to the bars of the ladder to swing laterally therefrom, said arms being provided with pointed engaging ends and beveled locking shoulders, and'pivoted lock ing arms on said bars having beveled locking ends to engage said shoulders and hold said arms in outt'olded position.

2. The combination with a ladder, of bracing arms pivoted to the ladder to swing outwardly therefrom and. having curved free 'ends provided with pointed terminals and beveled locking shoulders above the same, and locking arms pivoted to the ladder above said bracing arms and provided with beveled endsto engage said shoulders to lock said bracingl arms in outt'olded position. I

3. The combination with a ladder, of

bracket plates secured to the bars of the ladbars of the ladder and having pointed outer ends and locking shoulders above the same,

pivoted locking arms adapted to engage said shoulders to lock the bracing arms in outfolded position, and a hooked anchoring arm pivoted to the ladder at right angles to said bracing arms and at a point below the pivotal connections thereof.

. In testimony whereotl I aIi-X my signature in presence of two witnesses.

y JOSEPH COPLINKY. Witnesses:

J. WV. GARNER',

JOHN L. FLETCHER.

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