US894801A - Soffit structure for staircases. - Google Patents

Description

o UNITEDSTES- AT FFroE.

4 EDWARD EDMUND SCHACHNER, OF DENVER, COLORADO.

sorrrr' STRUCTURE son s'rnrneasns.

provide a sofl'it structure which being composed of a plurality of sections, is detachably supported u on correspondingparts of the stair case, w ich may be .manufactured so as to form a separate article of commerce and which, combining cheapness of construction withv great strength and an artistic exterior, will lend to the .stair structure'a massive and ornamental a p earance, while adding to its enduring qua ities.

The present application constitutes a division of the. application for patent Serial #379,504, filed by me April 14-1907.

ln the accompanying drawings in the various views of which like parts are similarly designated Figure 1 represents a fragmentary, sectional elevation of a stair case having my improved soillt structure, Fig.

2- asimilar view showing a modilied'form of the sofit structure, Fig. 3 afragmentary, transverse section taken through the stair case along a line 3- ,3, Fig. 1, Fig. 4- a fragmentary sectiontaken along aline 4-4, 35 1 Fig. 1, loo ng downwardly (the soflit sec-A tions being omitted),-Fig.` 5 a` rear eleva tion of the com leted structure looking in the direction of t e arrow from a point A, Fig. 1, Figs. 6, 7, 8, 9 and 10- views'illustrating diHerent forms ofv wire netting employed toreinforce the treads, risers and soflits comprised in the stair structure, and

Figs. 11 and 124- fragmentary views of rods the flanges 3, are at the junction of the lower portionl of the. vertical parts with the adjacent horizontal parts, oset to form angular Specification of Letters Patent.

originel application vmea April 14, 1907, serrer No. 379,504. Divided and this Serial No. 398,299'.

Patented July 28, 1908.

seats 9 adapted to receive the extremities of angle bars 10, which being arranged transversely between the two stringers, afford a firm su port for -the stairs 8, lthe ends of which abut the vertical surfaces of the latter. The stringers 2 are furthermore provided application med oeteber 19, 1907.

with inwardly extending flanges 11, which lower edges, form seats for the extremities of transverse, equidistantly arranged T bars 12 -being disposed longitudinally along their*` which may be secured to the stringers bx means of angles 13.

To lend an artistic appearance to the structure the under sides of the flanges 1 1 and of the T bars 12 are ornamented by moldings which at their points of. intersection, are mitered as shown in Fig.. 4 of the draw- 1n s. argl of the wings 12a ofv the tee connections, extending in one lane, form a ser/ies ofsupporting frames fllr the soi-fit sections 14, transversely separated by the upwardly extending parts 12 ofthe T bars.

The sections or panels 14, which collectively constitute the soilit 15, are roduced by molding a plastic substance,l pre erably a vmixture of cement and sand in dsuitable'po- 'portions or a'composition of plastic and x frames.

To yrender the molded parts tenacious and durable they are reinforced by the embedment of sheets of expanded metal or wire nettin 16, and `in case the sections are large, wit rods 17 which may be entwined with the netting. The wire netting employed to this purpose may be constructed in any desired manner, preference being given to the forms illustrated in Figs. 6 to 11 inclusive, all of which are formed with protuberant parts which aid in promoting the cohesion of the substances and reinforcin members com rised in the molded solit. he rods 17 emp oyed'in conjunction with the wire netting to reinforce the soflit sections are preferably roughened by twisting as shown 1n Fig. 12 or by integral circumferential ridges as villustrated in Fi 11, for the purpose of their cohesion with t e surroundmg plastic sub- The upper surfaces of the flanges 11 rendere The soilit, thus constructed and arranged,

is readily applied and combines in an inenpensive structure all the attributes of a massively constructed stair case, and its sectiorlns may'be made of standard sizes and kept in stock by dealers in architectural supp lies ready to be applied to the casing by simply placing them upon the series of frames formed by the iianges on the stringers and the transverse T-shaped connections.

The sollit of the stair structure may, if so desired, be vaulted as illustrated in Fig. 2 in which case the portions 11a of the stringerlanges intermediate the cross bars 1 2, as Well as the thereupon disposed soit sections 14" are curved.

Having thus described l my invention what I claim is z l 1; A soflit structure for stair cases comprising inl combination,` parallel stringers esseci having longitudinally inturned flanges, and a of sections removably supported wlthin the said frames by engagement therewith of their marginal portions.

3. A .soffit structure for stair cases comrising in. combination, parallel 'stringers raving longitudinally inturned flanges, the said flanges being composed of a plurality of consecutive arches, inverted- T shaped supports connecting the stringere at the points of intersection of the said arches and a soflit composed of a plurality of vaulted sections their marginal portions engaging the said iianges and the said supports'.

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

EDWARD EDMUND SGHACHNER Vlhtnesses:

` G. J. ROLLANDET, K. M. STUMP.

Images