US1502490A - Ladder attachment - Google Patents

Description

July 22 1924. 1,502,490

' W. G. TACK LADDER ATTACHMENT Filed Jan. 16, 1923 William G. Twain,

Patented July 22, 924.

NIEDVSTATES 'WILLIAM G. TACK, or GABRETTSVILLE, oHIo."

LADDER ATTACHMENT.

Application filed January 16, 1923. serial'No. 612,966. I

Relating to Ladder Attachment-s, of which the following is a specification.

,TlllS invention relates to certain improvements in ladder attachments; and the nature andv objects of the invention will be readily recognized and understood by those skilled inthe arts involved in the light of the fol lowing explanation and detaileddescription of the accompanying drawings illustrating what I at present consider and believe tobe the preferred embodiments or mechanical expressions of the invention from among various'other forms, arrangements, combi- 2 nations and constructions of which the in vention is capable within the spirit and scope thereof. a

An object of the invention is to provide a ladder attachment which will support the end of a ladder spaced from an object on and against which it may be desired or necessary to rest the ladder, so as to prevent possible damage or injury to the object due to the ladder contacting therewith or bearing thereagainst.

A further object of the invention is to provide an attachment for supporting a ladder spaced from and out of contact with an object on and against which it is desired to rest'a ladder, which attachment, will be so formed as to present an extended sup porting and bearing surface for engagement with the object and prevent displacement of. the ladder from desiredposition due to 410 slipping or to lateral or turning forces which may be applied to the ladder in use.

A further object of the invention is to form anattachment for supporting a ladder spaced from an object against which it is desired to rest the ladder, of simple,'durable and inexpensive construction, and which is adapted for ready mounting on and removal froma ladder.

With theforegoing and various other objects in view, which other objects will be readily recognized and appreciated by those familiar with this art, the invention consists in certain novel features in construction and in arrangements and combinations'of elements, as will be. more fully and particu- Portage Y larly pointed out and specified hereinafter v Referring to the accompanying drawings :1 Fig; 1, is a perspective view of one form. of the inventionappliedto a ladder mounted a 0160 Fig. 2,is a view inside elevation'ofan' attachment embodying theinvention applied in position on and against a' building.

to a ladder, a portion only -.of the ladder being shown. i

Fig. 3, is a view in top plan of one side of an attachment of the invention applied to a ladder,.one side bar only of the ladder being shown. I

In the accompanying drawings one form and embodiment of the invention is illusadapted for use with and application to a well known generaltype of ladder. ever, itwill be apparent to those skilled in this art that the various features of the invention and principles involved are capable tion overcomes, is illustrated in Fig.1 of

the accompanying drawings. With a building of the type in which gutters or the like are mounted at the caves of the. roof, when it is desired to support or resta ladder on the roof, thela dderinust press and bear against the guttering and uponithe applicationof weight or pressure to the ladder injury or damage to the gutteiing frequently results. An example of a roof ofthe above type in which these conditions are encountered vis illustrated in Fig. 1 of the drawings, and discloses a portion of a building B including a sloping or inclined roof R at the eaves E of which guttering G is mounted. A ladderlO of any desired type comprising the spaced longitudinal side bars 11 and transverse rungs 12 extending betweenand connecting the side bars 11 in the'usual manner is illustrated in position against and supported from therroof. Ryttnd How-1 PATENT 0F FlCE .I-;

11-70 trated for purposes of explanation, as

spaced from and out of contact with the 'guttering'. G by means of an attachment substantially U-shaped clamps adapted to be secured to one side of theladder 10 by attaching the same over and onto the sidebars 11 of the ladder, as clearly shown 111113116 drawings. Each clamp 15 is pro- Vided with a clamping'screw 16 mounted in andextending through one side plate thereof and adapted to engage aside bar 11 onto which the clamp is placed to. firmly and detachablysecure and confine the clamp in theydesired position on and to the ladder. An arm 17 extends rigidly from the base or cross plate of each clamp 15, in the pres ent instance integral therewith although not so limited, and is inclined longitudinally of and outwardly from the clamp, so that in proper. mounted position of the clamp on a ladder the arm 17 extends outwardlyfrom .and is inclined downwardly withresp'ect to the ladder. The outer ends of the arms 17 are provided with the substantially U-shaped clamps 18 which are disposed at approximately right angles to the clamps 15- connected thereto and spaced therefrom by the arms17. The clamps 18 a 16 of the clamps 15.

are-so mounted on the ends of the arms 17 respectively, as toextendin substantial outward alinement therewith and disposed at an outward and downward inclination in mountedposition, with respect to the clamps 1 5. Each of the clamps 18 is provided with an attaching screw'19 similar to the screws In the illustrated exa'm le the clamps 18 are formed integral wit the arms 17, so that each pair of clamps 15 and 18 forms with the connecting arm 17, a rigid integral unit. However,

attention is here directed to the fact that the invention contemplates other than an in tegral connection of the clamps 15 and 18 ofeach' unit, and it is not desired to limit the invention to the construction and mounting shown and describedabove. y

In the application aiiclnse of the invention a pair of clamps 15 are secured to the upper ends of the sidebars 11, respectively, of the ladder 10, and in transverse alinement there-v on,..wit-h-the arms 17 an'd'outer clamps 18 inclined outwardly and downwardly with respect tothe ladder, as clearly disclosed in Figs. 1 and-2. An extending supporting and bearing surface forming member 20 is provided, which member is secured in and extending between the clamps l8, transversely across and spaced from the ladder 10. In the illustrated example the supporting mem ber 20'is formed by a plank or board-of l suflicie'nt length to extend acrossthe ladder,

and secured at opposite points on the upper edge portion thereof in the clamps 18, by

means of the attaching screws 19 thereof. In this position the member 20 extends across the ladder 10 and is inclined outwardly and downwardly therefrom to provide at its outer portion the extended engaging surface 21.

With the attachment embodying the features of the invention above described, mounted on and applied to the ladder 10, when it is desired to place the ladder in position with its upper end resting onan object, for example the roof R of the build-. ing B, the supporting member 20; is placed in position with its extended bearing surface 21 engaging the sloping roof R, and due to the inclination of the member 20 and its rigid spacing from the ladder 10,

the ladder is supported and; maintained spacedfrom and out of contact or engagement with the eaves E or guttering G which project outwardly from the roof and building. In this manner injury or damage to the eaves or guttering. of the building is avoided and the ladder is maintained in desired mounted position supported by the member 20, the extended bearing surface 21 of which insures the ladder against slipping or displacement due to lateral, twisting or turning forces which may be applied there to in use, as will be understood by those familiar with the use of ladders.

The attachment can be readily removed from and applied to a ladder through the medium of the attaching screws of the clamps and due to the construction and arrangement of the clamps 18, any desired board, plank, or the like may be employed which obviates the necessity of maintaining and storing any specially constructed memher for this purpose, unless so desired. The construction of the clamp units is extremely simple and provides a durable but inexpensive attachment. Various other uses and applications-are within the scope of th'e in vention, and the illustrated application-and use is intended merely to permit of an ex planation of the invention. 7

It is evident that various changes, mode fications, variations and substitutions might be resorted towithout departing from the spirit and scop e of the invention, and hence I do not wish to limit myself to the exact disclosures hereof.

Desiring to protect my invention in the iii) adapted to be secured to a side bar of a ladder, an arm extending outwardly and inclined downwardly from said clamp in mounted position, and a second clamp at the end of said arm and disposed in a plane at an angle to the plane of said first mentioned clamp.

3. In a ladder attachment, a clamp adapted to be secured on a side bar of a ladder, an arm extending outwardly and inclined downwardly from said clamp in mounted position thereof, a second clamp on the outer end of said arm and disposed in a plane at an angle to the plane of said first clamp, and a supporting member mounted in said second clamp and extending outwardly therefrom, the said member forming a bearing surface spaced from said first clamp.

4:. A ladder attachment comprising, apair of clamp units adapted to be attached at one end to the opposite side bars, respectively, of a ladder, and a supporting member secured in and extending between the outer ends of said clamp units, the said member adapted to be inclined outwardly and downwardly from a ladder to which said units are attached.

5. As a new article of manufacture, a clamp unit for ladder attachments, comprising a clamp for attachment to the side bar of a ladder, an arm integral with and extending outwardly from said clamp at an angle thereto, and a second clamp at the outer end of and integral with said arm, said second clamp disposed in a plane transversely of said first mentioned clamp and adapted to receive and hold a supporting member transversely of a ladder.

6. In combination with a ladder, a clamp attached to a side bar thereof, an arm extending outwardly and inclined downwardly from said clamp, a second clamp at the outer end of said arm and in proximity to said side bar clamp, and a supporting member having relatively great width mounted in said second clamp and extending outwardly therefrom at an inclination to the ladder to form an extended bearing surface remote therefrom.

7. In a ladder attachment, a plurality of clamps adapted to be attached to the side bars, respectively, of a ladder, an arm extending outwardly from each side bar clamp at an angle thereto, a second clamp at the outer end of each arm in proximity to the side bar clamp thereof, respectively, and a supporting member having a relatively great width mounted in said second clamps and extending therebetween, the said supporting member extending outwardly from said clamps and forming an extended bearing surface remote from a ladder to which said clamps are attached.

8. As a new article of manufacture, a clamp unit for ladder attachments, comprising a substantially U-shaped clamp for attachment to a ladder, an integral arm extending outwardly from the base of said clamp rigid therewith and inclined longitudinally with respect to the clamp, and a second substantially U-shaped clamp at the outer end of said arm and disposed transversely with respect to said first clamp.

Signed at Windham, Ohio, this 2nd day of January, 1923.

WILLIAM G. TACK.

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