US1593255A - Stair and platform structure - Google Patents

Description

A. J. HALL STAIR AND PLATFORM STRUCTURE Filed Dec. 22, 1924 July 20 1926. 1,593,255

Patented July 20, 1926.

AKOS J. I-IALL, OF CLEVELAND, OHIO.

STAIR AND PLATFORM STRUCTURE.

Application led December 22, 1924. Serial No. 757,367.

My invention relates to the construction of stairs and platforms generally and to connecting and supporting means therefor particularly.` f

One of the objects of my invention is a simple and easily installed stair and platform structure.

Another object is to reduce. the cost of production as well as the cost of installation of such structures by arranging the elements thereof so that most of the work thereon can be performed in the shop, thereby leaving as little as possible of the work to be done in the field.

Another object is to reduce the cost of production of such structures by simplifying the members and the joints thereof.

Another object is a stair and platform structure in which the platform can be anchored in a wall and the stair structure adjusted thereon to suit the conditions of the building.

Another object is to simplify the connections between the members of such structures so that as little as possible field work is required to install these structures and so that as few as possible bolts or rivets or other similar expediencies are required to install such structures.

Another object is to simplify the connections between the platform and the posts and the stair stringers.

In former stair and platform structures, one of the important items is the cost of the field work for installing such structures.

Usually, the shop work of such structures is fairly accurate so that such structures would assemble easily in the field if the buildings were also fairly accurate.

Usually, a building can not be erected as accurately as the stair' and platform details can be made in the shop; the walls may be out of square, or not parallel, or the height of the anchor holes from the floor above or below may not be correct; in short, it is practically impossible to construct a building as accurately as the stair and platform details.

Therefore, with the `former'stair and platform structures, considerable fitting was required when such structures were assembled in the field or installed in a building, thereby consuming much time and expense.

The present invention aims to eliminate this consumption of time and expense by providing a stair and platform structure which can be installed almost anywhere, within reason, which is accomplished by arranging the members thereof so that they can be adjusted to the conditions found in buildings or otherwise without fitting or other time consuming operations, by merely locating the starting or first installed member as best suits the building, then attaching the other members thereto and locating them thereon, and then clamping the whole structure together.

. My invention is illustrated in the accompanying drawing in which Fig. l is a general perspective view of a stair and platform structure embodying the features of my invention and showing a stairway and a portion of a platform supported in a wall and also showing the neat appearance caused by the absence of bolt or rivet heads on the outside of the structure.

Fig. 2 is a sectional perspective' view showing a portion of a post and the support beam passing therethrough and the clamp means for clamping the support beam to the post.

Fig. 3 is a plan view of the central portion of Fig. l showing the fronti portion of the platform and the relation thereto of the posts and the support beam and the stair stringers.

Fig. 4f is a partial section, taken on a vertical plane indicated by the line 4 in Fig. 3, showing the notch and the ear on the upper end of the stringers and the relation of these ends to thel support beam.

Fig. 5 is a partial section, taken on a vertical plane indicated by the line 5 in Fig. 3, showing the notch and the ear on the lower ends of the stair stringers and the relation of these ends to the vsupport beam. Fig. 6 is a sectional view, taken on a horizontal plane indicated by the line 6 in Figs. L and 5, showing moreclearly the manner of securing the-stair stringers to the posts.

Fig. 7 is a partial section of the lower ends of the lower posts, taken on a vertical plane indicated by the line 7 in Fig. l, showing the notch and the ear on the bottom of the lower stair stringers and the relation of these lower ends to the posts.

Fig. 8 is a partial section, taken on a hori- Cil zontal plane indicated by the line 3 in Fig. 7, showing the manner of securing the lower ends of the stringers to the bottom posts.

Fig. 9 is a sectional perspective view showing the typical connection between the tread and risers and the stringers.

Similar reference characters reifer to simi lar parts throughout the views.

The structure shown in the accompanying drawing comprises, principally, the platform A (shown partly only), the lower stair unit B (shown t'ully), theupper stair unit C t also shown partly only), the middle post l), the endA posts E and F, and the lower posts G and Hl The plz'it-'orm` may have any suitable 'trame uponwhich the floor 10 in supported. Any or all of theseitrame members may be anchored in'or on-a wall. For present purposes it is necessary to refer-to only one ot tlieseat'ramemembers, the beam 11, the ends 12` otwhicli are anchored inthe walls 13 and 111# respectively,

The middle postD is hollow and has the openings 15 through the walls 16 and 17 thereof to permit the beam 11 to pass through this post, or in other words, permit the post Dto be slipped onto the beam.11 and to be moved thereon to adjust the same thereon into desired position.l

For-the purpose of'economy of manuiae ture, l prefer to make the openings 15 a little larger than the sectional outline of the beam11 so that-this post can be slipped overthe beamfl readily and without fit.- ting. The-walls 19 ofthe openings 15 are flush with the inside-ofthe wall 18 so that the becket" the beam-11 bears thereon when the post D is clamped thereon. The walls 2O ot the openings 15j rest on` the top oft the beam 11, thereby supporting the post D on thefbeam 11 vertically.

As seen in Fig. 2, the back of the beam 11Ab'ears on the wall 18- of the post D and this post is supported vertically'onthe top ot the beam 11. In order to retain this postr Drin desired longitudinal position on the beam 11, I provide the clamp J' having` the portion 21 to engagethe ends of the lianges oie the beam 11 and the portions 22 bearing against the inside of the 7all 8. The bolts 23, pass through the wall 18 iu through the portions 22y and, upon rtening thereof, securely clamp the post D laterally onto the bea-m11.y

The postsA E and` F are similar to the post D, are supportedon the beam 11 in the same man-nenas' the postD, and are clamped to the beam 11 in the same manner as the The lowerr stair unit' is composed ot the stringers 24 and 25 and the treads 26 and the risers 27.

The upper stair unit is composed of the stringers 2S and 29 and the treads 30 and the risers 31.

ln the present instance, each oi' the stair units is held into a unit by the lugs 32 :Formed on the ends of all ot the treads and risers and passing through openings in the webs oi' the stringers and bent against the inside of these webs as illustrated in Fig. 9.

:is seen in Figs. 1, ll, and 5, the wall 18 of the post D has the openings 33 and 3i and that the upper end of the stringer 21k passes through the opening 33 and extends into the interior or hollow oiz the post Dand that the lower end of the Stringer 29 passes through the opening 311 and also extends into the interior or hollow of the post D.

The posts E and F are similar to the post D except that only one stringer enters each post; therefore, l have designated thecorresponding portions of' these posts by the same reference characters as the post D.

As seen in Fig. 4, the upper end oi each of the stringers 24tand 25 has the notch 35 leaving the ear 36 by means oi which these upper ends are supported on the beam` 11.

The inner walls 37 of the openings 33 and 34: are Hush with the inside-ot the walls 16 and 17 so that the ears 36 bear on these walls.

The upper ends ot the stringers 24 and 25 are secured to the respective sides ot the posts by the bolts 38 which pass through the ears 36 and through the walls 16 or 17.

is seen in Fig. 5, the lower end of each ot the stringers 2S and 29 has the notch 39 lea-ving the ear d() which abuts the top of the beam 11; thereby supporting the stringers 23 and 29 on the beam 11. 'The ears l() are secured to the walls 16 or 17 by the bolts 38 similar to theears 36.

The posts G and H are similar, each is hollow and has the walls Ll1 and L12. The wall 411 is provided with the opening 43 having the wall 14C thereof flush with the inside of the wall l2.

rlhe lower end of each string- er 24 and 25 has the notch d5 leaving the ear 16 which extends into the interior or hollow of the posts G or H and is secured to the wall 42 by the bolt 38. The notched portion 15 abuts the walls 11 and 17 of the opening 13, thereby, augmented by the bolts 38 at this end, supporting` the lower end ot the stringers and 25 on the posts G and H.

A.. platform or landing similar to the platform A is provided at the upper end of the stringers 23 and 29 similar to the installation of the upper end ot' the stringers 24 and 25 on the platform A.

lVith the present invention', the stair and platform units can be made and assembled completely in the shop and moved into the field and placed in position there.

Vhen the platform is in position in the building according to provisions made in the building for such position, the posts are loose on the beam 1l and can be moved thereon longitudinally of the beam. The ends of the stringere of the stair units are then inserted into the respective openings in the posts whereupon each stair unit and posts connected thereon is moved laterally on the beam 11 to adjust the stair units in relation to the walls of the building. .After the stair units are so adjusted, the bolts 23 and 38 are tightened, thereby assembling or installing the stair and platform members into a rigid structure without fitting or other time consuming operations and locating the structure in desired relation to the walls of the building. y

The posts G and H can be embedded in the floor as shown in Fig. l, or may rest on the top of the floor, or may have flanges or other'resting or anchoring means.

The structure shown and described is very simple and therefore economical of manufacture; the individual units of the structure are made complete in the shop which also is economical; the individual units are moved into the field and there assembled without fitting or other time consuming operations, thereby reducing the cost of installation; the units are adjustable in relation to the building, thereby further reducing the cost of installation; and the units are rigidly secured in position by merely tightening a few bolts, thereby further reducing the cost of installation.

rlhe accompanying drawing shows one embodiment of my invention; I am aware that my invention can be embodied in other forms or in other combinations ofelements and that modifications may be made within the scope of the appended claims; therefore, without limiting myself to the precise construction and arrangement shown and described, l claim l. A structure of the character described, comprising, a platform, connecting mechanism slidable laterally on said platform, a stair structure resting on said platform and attached to said connecting mechanism and movable therewith, and means for clamping said connecting mechanism to said platform.

2. A structure of the character described, comprising, a platform, posts resting on said platform and laterally slidable thereon, a stair structure having one end thereof resting on said platform and attached to said posts, and said stair structure movable with said posts to permit of adjustment thereof in relation to said platform and to structure adjacent to said stair structure.

3. A structure of the character described,

comprising, a platform having beams, posts supported on one of said beams, a stair structure having stringers, each of said stringers notched to form ears resting on said one beam, each of said ears secured to the respective one of said posts, and said posts adjustable laterally on said one beam while said stair structure is being associated with said platform.

l-. Ay structure of the character described, comprising, a platform having beams, posts supported on one of said beams, a stair structure having stringers provided with openings through the webs thereof, each of said stringers notched to form ea resting on said one beam, tread and riser sections on one end of said stair structure resting -v on said platform and adapted to move laterally thereon to permit of lateral adjustment of said stair structure in relation to said platform and to structure adjacent to said stair structure, and the posts on the other end of said stair structure fined in position to retain said stair structure in adjusted position.

6. A structure of the character described, comprising, a platform having a stair supporting beam, and a stair structure ccmprising a pair of stringers having openings through the webs thereof and notches in the ends thereof to form ears, tread and riser sections between said stringers, lugs on said sections and extending through said openings and bent against the webs of said stringers to form a unitary stair structure, said ears resting `on said beam to support said stair structure vertically, and said ears secured to said platform to prevent lateral movement of said stair structure on said platform.

7. A structure of the character described, comprising, a platform having a stair supporting beam, a stair structure having stringers, and treads and risers between them an ear on one end of each of said stringers, and each of said ears resting on said beam free of lateral confinement there- 8. A structure of the character described, including, a stair structure having stringers,

and treads and risers between them, one end of each of said stringere having a seat, each t lll ofsaid seats resting on a stair support Vertically to support one end ot said stair structure and each ot' said seats slidable laterally on said chair support to permit ot lateral adjustment of said stair structure in relation to the stair support and to struct-ure adjacent to said stair structure.

9. A stair structure including, a pair of stringers, a hollow post on the lower end ot each of said stringers, the lower end of each oiE said stringers having` a seat abutting one ot the walls oit' the hollow post thereon, and the lower end of each .of said stringers having an ear extending through said one wall and secured to the wall adjacent to said one wall.

l0. A stair structure including, a pair of ot said stringere, each end of each of saidstringers having a seat and an ear, eac-h ot' said seats on one end of said stringers resting on a stair support means vertically, and each ot said ears cxtendingv through one of the walls oi' the post on the corresponding end of the stringers and secured to the wall adjacent to this one wall.

ll. A structure ot the character described, comprising, a plat-torni and a lower stair unit and an upper stair unit associated therewith, each or' said stair units having stringers, three hollow posts supported on said platiorm, the upper ends ot said string*- ers of the lower stair un'it resting on said platform, the lower ends of said stringere of the upper stair unit resting on said platform, the upper end of one of said stringers ott the lower stair unit and the lower end of one ot said stringere of the upper stair unit extending through one ot the walls ot the middle one of said posts and secured to the walls adjacent to this wall, the upper end of the other of' said stringers of the lower stair unit extending through one of the walls of one of the end posts and secured to the wall adjacent to this one wall, and the lower stringere ot the upper stair unit extending through one of the walls of the other of the end posts and secured to the wall adjacent to this one wall.

l2. A structure of the character deend of the other of saidl scribed comprising, a platform and a stair structure associated1 therewith, posts connecting said platform and said stair structure, said platform having ay beam extending through all of said posts, each of said posts slidable laterally on said beam, said stair structure secu-red to said posts and slidable laterally with saidposts to permit of lateral adjustment of stair structure in relation to said plat-form and to structure adjacent to said stair structure, andclamp means to clamp said posts to saidbeam in adjustedy position.

13. A structure of the character described, comprising in combination, a platform and a stair struc-ture associated therewith, posts connecting said platform and said stair structure, said platform having a beam extending through all or' said posts, each of said posts slidable laterally on said beam, said stair structure including stringers having openings through the webs thereot, tread and riser sections between said stringere. lugs on said tread and riser sections and extending through-said openings and bent against said webs to form a unitary stair structure, the ends of said stringers secured to said posts and slidable laterally with said posts to permit of lateral adjustment of the unitary stair structure in relation to said platform and to structure cent to said stair structure, and clamp means to clamp said posts to said. beamin adjusted position;

lil. A structure ot the character described, comprising,- a platform having a beam and a' stair structureas'sociated therewith, posts supported on saidbea-m and slid'- able thereon laterally, said stair structure secured to saidposts andl slidable therewith to permit of lateral adjustment of said stair structure irl-relation to said platform and to structure adjacent to said stair structure, a

clamp associatedl with each of saidposts, each of said clamps embracing said beam traversely, and bolts to secure each of said clamps to the post thereof and thereby clamp said posts toA said beam in adjusted position.

AKOSv J. HALL.

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