US3561563A

US3561563A - Portable post step

Info

Publication number: US3561563A
Application number: US850213A
Authority: US
Inventors: Ralph Harsh
Original assignee: Individual
Current assignee: Individual
Priority date: 1969-08-14
Filing date: 1969-08-14
Publication date: 1971-02-09
Anticipated expiration: 1988-02-09

Abstract

An integral rigid catwalk metal sheet bent along a transverse fold line to provide a post engaging portion and a step portion, the post engaging portion having a laterally inwardly extending notch for engaging the post. The post is engaged by opposing edges of the notch wherein one of the edges is the inner edge portion of the step portion. The step is placed on the post from the side and the weight of the step portion will cause the unit to pivot downwardly bringing the opposing edges of the notch into engagement with the post thereby locking it in place. The post engaging portion forms an obtuse angle with the step portion and the step portion is normally positioned in a horizontal plane. A series of vertically spaced apart steps may be placed on a post and extend alternately from the post at angles of 90* to each other. Oppositely facing concave portions may be formed in the opposing edge portions for matingly engaging the rounded peripheral edge of a round post.

Description

United-States Patent [72] lnventor Ralph Harsh 905 Bryan, Adel, Iowa 50003 [21] Appl. No. 850,213 [22] Filed Aug. 14, 1969 [45] Patented Feb. 9, 1971 [54] PORTABLE POST STEP 1 Claim, 6 Drawing Figs.

[52] U.S.Cl. 182/92 [51] Int. Cl. E06c 7/08 [50] Fieldol'Search 182/134,

[ 56] References Cited UNlTED STATES PATENTS 1,247,622 1 1/1917 Berrigan 248/125 2,774,562 12/1956 Henry 248/246 2,086,280 7/ 1937 Matter 248/246 3,019,852 2/1962 Soderberg.... 182/134 3,121,471 2/1968 Soderberg.... 182/134 3,298,459 1/ 1967 Bergsten 182/ 189 Primary Examiner-Reinaldo P. Machado Au0rneyZarley, McKee & Thomte ABSTRACT: An integral rigid catwalk metal sheet bent along a transverse fold line to provide a post engaging portion and a step portion, the post engaging portion having a laterally inwardly extending notch for engaging the post. The post is engaged by opposing edges of the notch wherein one of the edges is the inner edge portion of the step portion. The step is placed on the post from the side and the weight of the step portion will cause the unit to pivot downwardly bringing the opposing edges of the notch into engagement with the post thereby locking it in place. The post engaging portion forms an obtuse angle with the step portion and the step portion is normally positioned in a horizontal plane. A series of vertically spaced apart steps may be placed on a post and extend alternately from the post at angles of 90 to each other. Oppositely facing concave portions may be formed in the opposing edge portions for matingly engaging the rounded peripheral edge of a round post.

the next.

1 PORTABLE ms: Star The maintenance work along streets and highways concemed with conventional signstructures requires using some sort of ladder device ttoreach' the top portions of the signs since most of them are taller thanthelordinary workman. The

. use of a stepladder or the like is terribly time consuming and unsatisfactoryfor among other'reasons the reason that a suitable support for the ladder cannot-"befound. It is desired to utilize a minimum number of work pieces in working on the sign structures since the structures may be some distance apart and the work pieces will have to be carried from one structure to The portable post step of thisinvention is simple in design and is self supporting omthesign post being worked upon and permitting the stepto placed directly on thepost. The step comprises a post engaging portion which forms an obtuse angle with the step portion which iss'ubstantially longer and due toits own weight causes theopposing edges of the notch to bite into the opposite sidesof the post to hold the step in place when first installedon the postjAs additional weight is applied to the step portion the opposing edges of the notch bite deeper into the 1post, usually made of wood, and'consequently provide even a more positive locking engagement between the post and the step unit Preferably, relatively heavyca twalk metal material is used.

which is inherently strong enough to supportthe ordinary person without additional strengthening infeans being employed.

The catwalk material also has the roughened top surface to provide gripping means for the workmens feet.

If desired, several step units ma be placed in vertically spaced apart relationship on the post preferably at 90 relative r to each other such that the workmenmay walk up the post.

These and other features and advantages of this invention will become readily apparent tothoseskilled in the art upon reference to the following description when taken into consideration with the accompanying drawings, wherein:

FIG. I is a fragmentary perspective view of a post having b th right and left hand engagingl portable step units posi, tioned thereon in vertically spacedfapart relationship. with a 90 angle between adjacent steps;

FIG. 2

unit;

FIG. 3 is a top plan view of the step unit on a post structure;

FIG. 4 is a cross-sectional view taken along line 4-4 in FIG.

is a perspective view of a right hand engaging step FIG. 5 is a perspective view similar to FIG. 1 but showing a round post in cross section and thestep units having opposing concave portions formed in the opposing edges of the notch for mating engagement with the rotinded peripheral edge of the round post; I

FIG. 6 is a top plan view of the step u'nit seen in FIG. 5.

The step unit of this invention is referred togenerally in FIG. 2 by the reference numeral l0and includes a rigid integral sheet of catwalk metal folded along a line 12 to form a post engaging portion 14 and a stepportion 16.

As seen in FIG. 4, an obtuse angleis formed between the step portion 16 and the post engaging portion 14 and the step being rectangular in shapeincludes a rectangular notch 20in the post engaging portion only. 'I'he inner end portion 22 of the step portion 16 is on a line in a plane extending through the fold line 12 cooperates with a side edge 24 and an opposite transverse edge'26 from thejedge 2210 form the notch opening20.

It is seen that the edges 22 and roughened at 33 bymeans such as torch cutting to 'pjrovide additional gripping means for engagement with the sides 28 and 30 of a wooden post 32. t I

It is seen that the post engaging portion I4 with the notch 20 formed therein is basically L-shaped with oneend of oncof the legs being integrally connected at thc fold line 12 to the step portion 16. Depending on which side the notch 20 is cut into the post engaging portion Mwill determine whether the step unit 10 is aright'or left-hand unit such as is seen in F I6. I wherein the two top units arclcft handed as indicated by the reference numeral 10A .and the bottom step unit is right handed similar to the unit of'FIG.I2. It is further seen in FIG. I that the step unit 10 may be placed on the post at any height by movementin a horizontal plane and that on a rectangular inlcrosssection post =the'notchwill appropriatelyengagc any side of the post such that the adjacent step units may extend at an angle of to each other which makes for ease in walking up the post.1Otherwise, it wouldbe difficult to move from the lower post 10 to the intermcdiatepost 10A if they were directly above each other. It is however-seen thatthc top post 10A is superimposed over the bottom post 10 but this will present no problem since while standing on the intermediate post A the workmen can easily move on upwardly to the top step 10A which is turned 90 in superimposed relationship with the bottom step 10.

The workmen willhavea sure footingon'the step portion 16. because of theraised teethlike portions 40 uniformly covering the top surface of the catwalk sheet metal.

The step unit of this invention may also be used on cylindrical posts circular -in-cross section and as seen-in FIGS. 5 and 6, the opposing edges 22A and 26A forming the notch 20A have additionally inwardly facing

concave portions

42 and 44 cut therein to matingly engage the peripheral rounded surfacc'of theiround post46.

In use a single step unit 10 may be employed or a series of them as seen in FIG. 1. In any event the step unit is placed at the desired height along the post and moved into engagement therewith by the

notch

20 or 20A rcccivingthe post and the inherent weight of the step portion I6 will cause the opposing edges ofthe notch to automatically bite'into the post as seen in FIG. 4 for example and lock the step unit 10 rigidly in place such that a workman may immediately 'step onto the step portion 16 and perform the normal maintenance work on the post and/or sign structure. When the job is completed the step unit 10 may be easily removed from the post by simply raising the outer end of the step portion 16 to disengage the opposing edges of the notch 20 from the post and then moving the step unit laterally away from the post THe step unit may then be moved onto the next post and the same procedure repeated.

I claim:

l. A post step comprising: 7

a sheet of rigid integral metal having inner and outer end t portions; t

said inner and outer end portions meet along a fold line andsaid outer portion is adapted to extend in a horizontal I plane while said inner portion extends at an obtuse angle 1 relative thereto; i said inner portion including a laterally inwardly extending notch from one side whereby said step may be placed on and removed from a post by moving it in a horizontal plane such that said notchmoves intov and out of engagement with a post, said notch being formed by three sides,- two of which have opposing edges parallel to said fold line for biting engagement with said post, one of said opposing edges being the inner end of said outer portion and said one opposing edge being in a'transverse plane including said fold line, said outer portionhaving a substantially greater length than said inner portion, and is adapted to provide space for the 2 feet of a workman and said sheet I being rectangular in shape, said notch being substantially rectangular inshape and the distance between said opposing edges being slightly greater than the corresponding dimension of the post on which said step is to be positioned, said opposing edgesincfluding opposing concave mounted on a post and said adjacent post steps alternately extend in directions approximately @Oflapart outwardly from said post; and said rigid integral metal being formed from catwalk metal and thereby having inherent strength-to support a persons weight. r

Claims

1. A post step comprising: a sheet of rigid integral metal having inner and outer end portions; said inner and outer end portions meet along a fold line and said outer portion is adapted to extend in a horizontal plane while said inner portion extends at an obtuse angle relative thereto; said inner portion including a laterally inwardly extending notch from one side whereby said step may be placed on and removed from a post by moving it in a horizontal plane such that said notch moves into and out of engagement with a post, said notch being formed by three sides, two of which have opposing edges parallel to said fold line for biting engagement with said post, one of said opposing edges being the inner end of said outer portion and said one opposing edge being in a transverse plane including said fold line, said outer portion having a substantially greater length than said inner portion, and is adapted to provide space for the 2 feet of a workman and said sheet being rectangular in shape, said notch being substantially rectangular in shape and the distance between said opposing edges being slightly greater than the corresponding dimension of the post on which said step is to be positioned, said opposing edges including opposing concave inwardly facing portions for engagement with a round post; said notch has a uniform width between said opposing edges at the mouth and the base of said notch; said top surface of said outer portion being roughened to provide frictional means for engagement by a person''s fast; said post step is one of a plurality of similar post steps mounted on a post and said adjacent post steps alternately extend in directions approximately 90* apart outwardly from said post; and said rigid integral metal being formed from catwalk metal and thereby having inherent strength to support a person''s weight.