US1153750A - Ladder for stave structures. - Google Patents

Description

E. A. BERRY.

LADDER FOR STAVE STRUCTURES.

APPLICATION FILED OCT. 11.1914.

Patented Sept. 14, 1915.

l/VVE/VTUR far/e14. Ber/ 7 i9, WWII/E8858 COLUMBIA PLANOGRAPH CO WASHINGTON. D. C-

ii iii a. t i g 2 EARLnA. BERRY, OFKANSAS CITY, MISSOURI.

LADDER FOR STAVE STRUCTURES.

To all whom it may concern:

Be 11; known that I, Earns A. BERRY, a citizen of the United States, and a resident of Kansas City, in the county of Jackson and State of Missouri, have invented a new and Improved Ladder for Stave Structures, of which the following is a full, clear, and exact description. V v My invention relates to ladders for stav structures, such as silos, tanks, etc.

An object of the invention is to provide a ladder for stave structures which is simple, strong and inexpensive and which forms part of the tie hoops which bind the stave structures.

Another object of the invention is to provide a ladder the alternate steps of which form part of a lug engaged by the ends of a tie hoop, and the other step of a loop depending from the lug.

With the above and other objects in view, the nature of which will more fully appear as the description proceeds, the invention consists in the novel construction, combination and arrangement of parts as herein fullydescribed, illustrated and claimed.

In the accompanying drawings, forming part of the application, similar characters of reference indicate corresponding parts in all the views, and

Figure 1 is a perspective view of a tie hoop for stave structures provided with an embodiment of my invention to form a ladder for the structure; Fig. 2 is a horizontal section on line 22, Fig. 1, and Fig. 3 is a vertical section on line 33, Fig. 2.

Referring to the drawings, 10 represents a tie hoop which encompasses the staves forming the structure and is in the same plane with a corresponding dowel hoop 9.

The tie hoop 10 may be formed of more than one section, in which case it will have more than one lug 11 which engage the ends of the sections and whereby the tie hoop can be varied in diameter by tightening the nuts 12 engaging the threaded ends of the sections forming the tie hoop-10. The nuts 12 rest against the facing shoulders 13 of the lug. Between the said shoulders each lug has a U-shaped lateral extension 14located centrally between said lugs and adja cent the upper edge. The base of the U forms a ladder step, from which depends another step of a U-shaped loop 15. The ends of the U-shaped loop are clamped to the sides of the U-shaped projection 14. The

straight ladder.

Specification of Letters Patent. Patentgd Sept, 14, 1915 Application filed October 17, 1914. Serial No. 867,144.

lower end of said U-shaped loop 15 is made to project laterally (as shown at 16) away from the lug by bending the side of said loop 15. This bend in the loop makes the step, which is. suspended from the step formed by the U-shaped projection 14. The laterally projecting portion of the loop preferably Xtends slightly farther than the bottom ofthe loop 14.

The lugs 11 maintain the ends of the sections of the tie hoop in the same plane, and, therefore, when the sections of the tie hoop are drawn toward each other the pull is in the plane of the tie hoop, and not at an angle as in the tie hoops used at present. The successive steps formed by the projection 14 and the wire loop 15 of the successive tie hoops will form a ladder on which a person can reach the top of the stave structure, and on which steps one can stand while engaged in tightening the tie hoops at different heights of the stave structure. It is selfevident that the successive steps formed by each tie hoop are in alinement, that is, one above or below the other, so as to make a. The wire loop 15 is in reality a stirrup attached to the projection 14 of the lug, which forms an additional step, as described. and forms the intermediate step between the two tie hoops.

From the foregoing description, taken in connection with the accompanying drawings, the advantage of the construction and operation of the device shown will be readily understood by those skilled in the art to which the invention pertains, and while I have described the principle of operation, together with the device which I now con sider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative and that such changes may be made as are within the scope of the appended claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A ladder structure of the class described comprising,a lug adapted to receiveand retain the ends of a tie hoop, said lug having a projecting portion forming a step, and a loop depending from said projection and also forming a step.

2. A ladder structure of the class described the alternate steps of which are formed of a lug having means adapted to receive andretain the ends of a tie hoop, said lug having a Ushaped projection the bottomof which U forms a step, and a stirrup secured to the side of the U-shaped projection, forming an additional step. 7 V

3. A ladder structure of the class described the alternate steps of which are formed by a projection from a lug, and a loop depending from the projection of the lug, said lug having means for engaging and retaining the ends of a tie hoop.

4. A ladder structure of the class described the alternate steps of which are formed by a lug havin a substantially horizontal U shaped pro ection, the bottom of the U forming a step, and a U-shaped wire loop depending from said projection With the ends of jection, the lower part of said U-shaped loop being bent laterally to form a step substantially as described. 7

5. The combination with a tie hoop, a lug adapted to receive and retain the ends-of the tie hoop, said lug having a substantially horizontalprojection forming a step. 7

In testimony whereof I have signed my name to this specification. in the presence of two subscribing witnesses.

EARLE A. BERRY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

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