US1149368A - Ladder. - Google Patents

Description

rond mmf-io :i

iensii'e in construction and in syndication to the our but the, saine were also lgzrngeions inasmuch as they were liebte to be puiied oi from theeair and unse injur7 to the treininen attempting' to usenthem.

It is to object or this invention to jirov'd'e a1 .iaufder which is verja simple und inexprnf sire in construction ind which when applied to the ezir is not izriie to give wry so that the safety ottiie trniinnen is not gered. li g Y In the accompanying drawings: Figure "l is e perspective view of a freight our equipped with my improved iadder. F 2- is a horizontal section thereof, on an lenlarged Sonie, taken in line l. Fig. 3 is o Yertica section in Atine 3---3 Fig.

Similar chmf'neters of reference indios-te oorresnonding parts throughout the severed rie-Ws. 1

Although my iin-proved ladder may be used in various pinces ti' ed in the' drawings apniieo to a bei; freight r the body oi which ooinprises a, Wai T, an end. wail 2, and a top or roof 3.'

fy improved ladder may be appiied to the side and end miie as weil; as to the roof of the ear body und comprises e plurality of sections which are arranged in vertioai tiers or rows and each owhieh is constructed as foliows:

L represents n horizontal supporting bar,

6, 6 tivo guard-arms each connected at oneV end with one end of the supporting bor and projecting ietereiiy therefrom and 5t two fastening or ottnehing shrinks' enen eonneeted e'tone end with tiie other end of one of the guard arms and i ming its opposite end provided 'with an. external screw thread T, as shown 'in l? Q and 3. The supporting bar, guard arms and fastening shunks are meferabiy' formed intograily by bending the endenseine into the orindesoribedfrom :i single rod ofA iron or other metal.

njits and side Wallis and dso in its root the earv body is provided with a piurality of pairs of ,openings S, 8 Whieinl are adapted to receive the pair 'of fastening sin-inks of one of the edder s- Si, 9 represent pair of sip-seing each of which arranged on one o'v th fastening Shanks and engages et one end with, the shonider formed by the adjacent guard' arm yWhie its opposite end fbeers against one side vof the adjacent wait or roof 'of dthe oar body on which .the ia-dder is ,eine is represent,

mounted. l0. 10 represent a pair of @lmnp-- ing sereni nuts 'each arranged on the thread ed portion of one of said shanks rind bearing against the opposite side of Said weil or roof of the our body. Those ladder sections Whioii. ere mounted on the verticzi Weils-of the. Carr body here their fastening Shanks arranged horiizootaiiv, their guard grins depending* from the Shanks and the supporting t r of each' seetion connected 1Witirthe 1 1lower ends of guard arms so that the latter serve to prevent the hands or feetpiaced on the supiforting bar from slipping off the ends thereof. The spire-ing sleeves heid the guard arms und .supporting oar off each seotion lthe required distance spurt from the enr body so as to permit of obtaining n good 'find i'eiiabie hand hold or 'foot heid on said supporting bei'.

.By extending the 'fastening siinnks through openings in the ear body und up piylng retaining ineens to the ini r ends thereof. suoli es ohimping soirees, it is nnpossibie for the indder section he pulled oi" from the om: body by the usuai ioid iniposed upon it. thereby nrnisinn ,fr perfectly safe end reiiibe mennen" efr-eer the Workman may seend the eer body or de soend therefrom Without any possibiit; of

being injured.

oonstrneting the y guard arms and .fastening .manner described and essein'i on the ear with the spacing s... @send eianipingnns n much cheaper construction of iudder is prec'uoed than t uit heretofore in use with the added advantage of greater security tothe Workmen. :md greater esse of zippljxiiig the sume ro the enr body,

'einini :is my invention:

l. )L ladder comprising o, horizontal sup- Mii l `mengsels porting har, tuo guard arms arranged at opposite endsof the supporting har and at an angle thereto', and fastening Shanks eacl of uniform diameter and projecting later-` ally from one of the guard arms and adapted-to pass through on opening in the Wall adapted to receive the ladder, said har, arms and shanks being lient from a single rod of metal which is of the sanie size throughou itslength.

A. ladder comprising a horizontal supporting har, two guard arins arranged at opposite ends of the supporting har and at 'Y an angle thereto, fastening Shanks each of uniform diameter 'and projecting laterally from, one of the guard arms and adapted to pass through an opening in the Wall adapted to receive the ladder, said har, arms and Shanks being hent from a single rod of metal AWhioh is oi' the same size throughout its length. and spacing sleeves each arranged on one of said Shanks and adapted to hear at its Louter end against .one of said guard arms .and at its inner end against one side of saidA wall.

3. A ladder comprising a horizontal supporting har, two guard-'arms arranged at opposite ends of the supporting har and at an angle thereto7 fastening shanks each of uniform diameter and projecting laterally from one oftheguard arms and adapted to pass throu'ghau opening 1n the Wall adapted 'to receive the ladder, sa1d bar, arms and Shanks being bent from a single rod of Inetal which is of the same size throughout its length, spacing 4sleeves each arranged on one of said Shanks and adapted to bear at its outer end against one of said guard arms.

and at its inner end against one side of said Wall, and screws arranged on saidshanks and bearing against the opposite side of 'said Wall'.

4:. The combination of a Wall provided with a pair of openings, and a ladder mounted on said Wall and comprising a horizontal supporting bar, guard arms each connected at one end with one end ofsaid supporting bar and projecting therefrom at right angles thereto, fastening Shanks each of uniform diameter and projecting laterally from .the

I,other end of one of said guard arms and` LAWRENCE T. JOHNSON. `Witnesses THEO. L. Porn, E. M. GRAHAM.

Images