US712351A - Step-ladder. - Google Patents

Description

Patented Oct. 28, 1902.

S. S. ADKINS.

STEP LADDER.

I Application filed Oct. 26, 1900.:

(No Model.)

UNITED STATES PATENT OFFICE.

SAMUEL S. ADKINS, OF ST. LOUIS, MISSOURI, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO SELAI-I S. W. WESTOVER, OF ST. LOUIS, MISSOURI.

STEP-LADDER.

SPIEGIFICATIQN forming part of Letters Patent No. 712,351, dated October 28, 1902.

Application filed October 26, 1900. Serial No. 34,526. (No model.)

To all whom it may concern: I there. The said steps restupon and are sup- Be it known that I, SAMUEL S. ADKINS, a ported by the bolts 8 and serve to maintain the citizen of the United States, residing 8114803 said trussed members atafixed distance apart. Leduc street, St. Louis, Missouri, have in- The bolts support the steps and draw the 5 vented certain new and useful Improvements trussed members toward each other. At the in Step-Ladders, of which the following is a upper ends of the members 1 and Zare prospecification. jecting blocks 9, to which are secured the My invention relates to the construction of pivot-plates 10, provided at their lower ends step-ladders in a cheap and substantial manwith perforations through which pass the 1o ner. I pivot-pin 11. The upper end of the brace B In the accompanying drawings, Figure lis is provided with a cap-plate 12, adapted to a side elevation of my ladder. Fig. 2 is a contact with the projecting block 9 and the front elevation of same. Fig. 3 is a detail members 1 and 2. To give rigidity and st-a view of the brace, showing the means of sebility to the brace, I secure the members con- 5 curing the two side members of the brace tostituting the brace at a fixed distance apart gether. Fig. t is a detail view of the upper by a construction similar to that used in the end of the standard and brace, showing the step portion. The two members of the brace pivoted connection between brace and standare-secured at the proper distance apart by ard. Fig. 5 is a detail edge view of same. the distance block 15, its ends abutting 7o 20 Fig. 6 is a detail view showing a portion of against the inner sides of the brace members standard. Fig. 7 is a vertical section on line 13 and 14:, providing along bearing in the di- 7 7 of Fig. 2, showing the cross-rod connecrection of their length. The distance-blocks tion between the standards. Fig. 8 is a deare held in position by the U-shaped tie-bolts tail elevation of the standards, showing the 16, passing through the said brace members, 2 5 loop end of cross-rods. Fig. 9 isadetail crosssaid tie-bolts being provided with nuts or section on line 9 9 of Fig. 2 looking in direcheads or other means adapted to draw said tion indicated by arrow. brace members firmly. against said distance- This ladder is of the usual type, and conblocks. sists of two members pivotally connected at Having thus fully described my invention, 30 or near their upper ends. These two memwhat I claim as new, and desire to secure by bers are designated by the letter A as con- Letters Patent, isstituting the step portion and B the brace. In a step-ladder, the combination of two The step portion consists of two vertical members, one a step member, and-the other trussed members 1 and 2, alike in construc-. a brace, said two members pivotally con- 35 tion, each of which members consists of two nected; the brace consisting of side memstrips 3 and 4, held in fixed relation to each bers, distance-blocks and U-shaped bolts, other by the straps 5, surrounding same at or with means for drawing said side members near their terminals, and the interforced toward each other, and against said distancewedge 6, with steps 7 arranged at suitable inblocks, and holding said distance-blocks in 4o tervals, their ends abutting against theinner place; the step member consisting of two side sides of said trussed members and held in pomembers, steps located between said memsition by U-shaped tie-bolts 8, which said bersand held in place byboltspassingthrough bolts pass through-the said trussed members, said side members and under said steps, and the washers7, bearing against the out adapted to draw said side members against 45 side of members 1 and 2 and under the said said steps and hold said steps in place, substeps, said bolts being provided with nuts stantially as described. upon their ends adapted to be drawn tight against said washers. Said bolts may be pro- SAMUEL ADKINS vided with heads in lieu of said nuts or with Witnesses: 50 other means adapted to draw said trussed G. W. SIMPSON,

members toward each other and hold them JOHN WINDMER.

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