US794908A

US794908A - Stairway.

Info

Publication number: US794908A
Application number: US22158004A
Authority: US
Inventors: Francis A Winslow
Original assignee: WINSLOW BROS Co
Current assignee: WINSLOW BROS Co
Priority date: 1904-08-20
Filing date: 1904-08-20
Publication date: 1905-07-18
Anticipated expiration: 1922-07-18

Description

No. 794,908. P-ATENTBD JULY 18.1905.

2. A. WINSLOW.

STAIRWAY.

APPLICATION rnsn me. so, 1904.

No. 794,908. iatentecl July 18, 1905.

NITED STATES PATENT riucn.

FRANCIS A. \VINSLOVV, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE WINS- LOW BROS. COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

STAIRWAY.

SPECIFICATION forming part of Letters Patent NO. 794,908, dated July 18, 1905. Application filed August 20, 1904;- Serial No. 221,580.

To all whom it may concern: riser and above the soffit is filled with con- Be it known that I, FRANoIs A. WINSLOW, crete to form a step of the ordinary form, as 5 a citizen of the United States of America, reillustrated.

siding at Chicago, in the county of Cook and My improved method of construction is par- State of Illinois, have invented certain new ticularly advantageous in wide stairways. and useful Improvements in Stairways, of Heretofore it has been necessary to place a which the following is a specification. strengthening-beam below the central line of My invention relates to certain new and a wide stairway to brace the same; but such useful improvements in Stairways; and its oba structure possesses certain disadvantages 1O ject is to produce a device of this 'class which which are removed by my improved construcshall have certain advantages which will aption. In many instances the space below a pear more fully and at large in the course of stairway is so small as to make it practically this specification. impossible to have a downwardly-projecting To this end my invention consists in certain beam below the lower line of the risers, and

I 5 novel features, which are shown in the accomin any case such a beam breaks the fiat sofiit panying drawings as embodied in my preand interferes with any scheme of ornamenferred form of construction. tation which might be adopted. With the de- 5 In the aforesaid drawings, Figure 1 is a lonvice herein shown each riser is braced by the gitudinal section through my improved stairtruss-rod on its rear face, and no additional 2 way. Fig. 2is atransverse section in the line central brace is necessary for a stairway of 2 2 of Fig. 1 looking in the direction of the any practicable or desirable width. Thus arrow, and Fig. 3 is a perspective view of the space is gained below the stairway without rear face of one of the risers. any accompanying weakening of the struc- Referring to the drawings, A is the soflit of ture, and at the same time a large unbroken 5 myimproved stairway, the same being formed surface is provided upon which a consistent of a plate of metal having a flat lower surface ornamental scheme can be worked out. which affords a good basis for such ornamen- I realize that considerable variation is pos- 7 5 tation as is common in high-grade interior sible in the details of this construction withironwork. To this sofiit are secured a pluout departing from the spirit of the inven- 3 rality of risers B, each of the risers having at tion, and I therefore do not intend. to limit its lower end a downwardly-projecting flange myself to the specific form herein shown and b, which is riveted or otherwise secured to the described. 0 soffit A. The sofiit is secured at its edges to I claim as new and desire to secure by Letside beams C, to which the ends of the risers ters Patent 35 are also secured. 1. In a device of the class described, the

On the rear of each of the risers B are two combination with a sofi'it and a riser secured lugs b at the upper corners, and a third lug thereto, of a truss-rod wholly supported on 8 5 b is provided at the center near the lower the rear of the riser, said truss-rod running edge of the riser. A truss-rod D is hooked from the two upper corners of the riser and 4 at its ends over the lugs b and at its center over asuitable engagement device at the cenengages with the lug The truss-rod is in ter of the lower edge. practice shrunk into place on the riser by 2. In a device of the class described, the 9 heating it and placing it in position. When combination with a soifit and risers secured cooled, it will be evident that the center of thereto, of an integral lug at each upper cor- 45 the riser will be subjected to a strong upward ner of the risers and at the center of the lower pull, which will tend to stiffen the riser very edges thereof, and trussrods running over materially. After the metal work of the said lugs. stairway is assembled the space behind each 3. In a device of the class described, the

combination With a soflit and risers secured application for Letters Patent, at Chicago, in thereto, of a lug at each upper corner of the the county of Cook and State of Illinois, this risers and at. the center of the lower edges 15th day of August, A. D. 1904.

thereof, truss-rods running over said lugs, FRANCIS A. WINSLOW. 5 and a body of concrete filling the space be- WVitnesses:

hind each riser and above the soffit. CHARLES S. SAXE,

In witness whereof I have signed the above W. R. IiAVANAUGH.