US1115420A - Ladder attachment. - Google Patents

Description

J. N. PARNHAM.

LADDER ATTACHMENT.

APPLICATION FILED SBPT.0,1913.

1 1 1 5 42f), Patented Oct. 27, 1914.

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LADDER ATT CHMEN Specification of Letters Patent.

Patented Oct. 27, 1.9.1.4.,

Application filed September 9, 1913. SerialNo. 788.916.

To IIZZ P/mm '1' 16 1/1 3] concern 3e it known that l, Jnnan'mn N. Fannim'n, citizen of the United States, residing at Rockland, in the county of Knox and State of Maine, have invented certain new and useful Inun-ovements in Ladder Attachments, of which the following is a specification. I

My present invention relates to new and useful improvements in attachments for la dders and more particularly to ladder brackets, being animprovementover the ladder bracket construction disclosed in Pat en-t No. 1,066,892, granted to me July 8,1913.

The primary object of my presentinvention is to provide a ladder bracket construction which may be more simply secured tov the ladder, it being necessary to employ but one lashing. instead of the three, previously And a still further object of my invention is to simplify the construction of the swinging crane-arm and the manner of mounting the arm upon the body of the h 'acket. I

ll'ith these invention will be more trated in the accomymnying drawings, and then specifically pointed out in the claims, which are attached to and form a part 0' this application.

In the drawi.ng:--Figure 1 is a perspective view of my improved ladder bracket in use. Fi 2 is a sectional view taken through the ladder howing the bracket in top plan.

and other objects in view, my fully described, illus- Fisz. 3 is a'fragmentary side elevation of the ladder bracket showing the lower bearing for the swinging crane-arm.

Correspondin'g and like parts are referred to in the following descripti0n and ind1- cated in all the views" of the accompanying drawings by the same reference characters.

My ladder bracket consists primarily of an L-slnmod frame 1.0 adapted for. attachment to a ladder, this frame being formed'in two parts 11 and 12, the former partcousisting of a strip of angle iron having one {lance cut away at one end and the extending portion of the other flange rebent outwardly in spaced relation to provide a lad der rung engaging hook 13'. The framemember 12 is substantially L-shaped, being secured by its shorter arm to the cut-away flange of the member 11, adjacent thehook.

by rivets, bolts, or other fastening devices 14, and being formed at its" free end with a perforation '15. A diagonally extending bracelfi strcngthcns the frame and prevents movement of the member 12 toward vthe member 11.

A V-shaped frame 17 has directed'and passed throu upstanding ears '18 carried by the frame member-12 and secured in place by nuts 19 threaded upon the ends thereof, orby cotter pins in lieu of nuts. The frame 17 is preferably formed from two rods of metal welded together at one end and this uncture of the rods is extended and bent upwardly rearwardly and downwardly to provide 31- second'ladder rung-engaging hook 30. That side member jacentthe rung is oif-set horimmtallv toward the rung, as shown at .21 in brdcr that said side of the frame. 1'? may extend in parallel relation to theladder rung upon which the bracket is supported.

it will be clear that when the above described frames con'iprising the main hudv of the ladder hrackct are lowered into place they will bring: the hooks 125 and 20 into ongagement with the ladder rung frame will he held not only against. downward movement but against all swinging movement as well. l urthermore, the frame its ends laterally cannot be freed from the ladder by any to disengagethe hooks. To prevent such possibility of disengagement the lower end of the framemember 11 is perforated to receive a lashing cord or cable 22 which may be lashed about the adjacent side of the ladder. This cord is preferably knotted as at 23 uponeither side of the frame member '11 to prevent disengagement from said member, when not in use.

The swinging crane arm cnt ladder bracket mmstrm-tion is rated as a whole, by the m'n'ncral and formed from a s'ii'ig'lc rod bent intermediate its lmigth to provide an eye and having its ends extended at an angle to each other as shown at 26 and 97. The free end of the side member $26 is bent downwardly at right angles and passed through the eye 15, being secured against disengagement therefrom by a. cotter-pin 28. A strip of metal 29 has its intermediate portion bowed to form a U-shaped bearing 30 and is secured by its end portions to the lower in my prcsindibar of the frame member 11 in such a man- 2111 spaced apart of the frame 17 extending admeans except by bodily raising the frame" nor that the U-shaped. member extends at an angle therefrom. The upper arm of the said U shaped mcmberis perforated to receive the lower end of the side 27 of the crane-arn'i 24 in snch'a way that said end will bear against the lower side of the U- shaped member. A cotter pin 31 is passed through the end portion of the side 27 between the sides of the U-shaped bearing member 30 to prevent disengagement of the lower part of the crane-arm 24. By this means the crane-arm is mounted for swinglllg movement between the free ends of the frame members 1.1 and 12.

T he free end of the hook 20 is preferably provided with an eye 32 in order'that the frame member 17 may be lashed to the ladder rung, if deel'ncd necessary. The eye 25v of the crane arm is adapted to receive a hook 33 of any preferred form of block and tackle 34.

The operation of the above described ladder bracket is identical with that of the laddcr bracket set forth in my earlier patent previous] referred to, and will also be readily lu'lderstood by reference to the drawing. For this reason no description of the same is deemed necessary.

The chief advantages of the above construction orer that set forth in my previous patent. reside in the fact that the bracket may be secured toa ladder with one lashing, therefore accordingly shortening thelength of time necessary to apply-or remove the same and in the further fact thatthe frame member 17 and swinging crane arm 24 are simpler and more economical to manufacture than the corresponding parts of my old 'form of ladder bracket. I do not wish, how ever, to be limited to thespecific details of construction shown and described, as various minor changcs, withinthe scope of the appended claims may be made at any time without inthe shghtest degree departing .from the spirit otmy invention.

What I claim is:-

1. A ladder attachment including a body member provided at one end with a book an armextendin laterally from the body member and braced thereto, a bearing bracket secured to the free end of the bed) member and including a horizontally dis posed U-shaped intermediate portion, the upper part of which is provided with a perforation, a crane-arm mounted to swing it the free end of the'laterally directed any and having a diagonally extending brace member, the free end of which is-passec through the perforation of the upper parl of the U-shaped portion of the bearing bracket to engage against the lower part thereof, a pin passed through that part oi said free end portion within the bearing bracket, and means for attaching the body member to a support.

2. A ladder attachment including an shaped body member, a ladder rung engaging hook carried by one arm of the body member adjacent its juncture with the other arm, a bearing bracket carried by the same armcarrying the hook, a crane arm swingingly mounted at one endin the free end of the other arm of the bodymember to swing in a plane parallel thereto, a diagonal brace extending from the free end of the crane arm and journaled in said bearing, he bear- 1 mg taking up the tnrust of the brace, and a second frame swmgingly secured to that arm of the body member carrying the crane arm and terminating 1n a hook adapted to engage'the same rungengaged by the first 'mentioned hook, the throat of said latter hook being directed at right angles to the throat of the former hook.

In testimony whereof I affix my signature in presence of two witnesses.

JEREMIAH N. FARNHAM. [1 a] I \Vitnesses: v

KELLEY Ti. Cain, IRA A. Slot-morn.

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