|Publication number||US2578119 A|
|Publication date||Dec 11, 1951|
|Filing date||Apr 25, 1949|
|Priority date||Apr 25, 1949|
|Publication number||US 2578119 A, US 2578119A, US-A-2578119, US2578119 A, US2578119A|
|Inventors||Yench Frank A|
|Original Assignee||Yench Frank A|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (8), Referenced by (5), Classifications (8)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Dec. 1l, 1951 F. A. YFNcl-l 2,5789
l scAFFoLDING DEVICE Filed April 25, 1949 2 SHEETS-SHEET 1 no W De. ll, 1951 F. A. YENCH vscAFFoLDINGDEVICE Filed April 25,' 1949- 2 SHEETS-SHEET 2 f .NH
Gol-0?..- 0000000000000@ ooooooora Patented Dec. 11, r`1951 `U'-"NITlED 'STATES PATENT vOFFICE SCAFFOLDINGl DEVICE Frank A.Yench, Two Rivers, Wis.
Application Aprl25, 1949, VSeria'fNO. 89,489
- 1 claim. 1
'This invention relates to an im-proved/scaold structure.
4ladder as one portion thereof with aplatform support. It iscontem-plated that this device be used with an extensible ladder 'so that `thefplatform may be vertically adjusted.
Another object of this invention is to provide a scaffold structure which will be rigid when set up, and at the same time can be taken down and set up very quickly.
A further object of this invention is to provide a scaffold unit for use with a pair of ladders of the fixed or extensible type, which will permit the separate use of the ladders, and the quick connection between the scaffold structure and the ladders so as to form a rigid scaffold.
With the above land other objects in view, my invention consists in the arrangement, combination and details of construction disclosed in the drawings and specification, and then more particularly pointed out in the appended claim.
In the drawings,
Figure l isv a detail side elevation of a scaffold structure constructed according to an embodiment of this invention,
Figure 2 is a sectional View taken on the line 2-2 of Figure 1,
Figure 3 is a sectional view taken on the line 3--3 of Figure 2,
Figure 4 is a fragmentary sectional view taken on the line 4--4 of Figure 2,
Figure 5 is a fragmentary sectional view taken on the line 5-5 of Figure 2,
Figure 6 is a fragmentary sectional view taken on the line 6 6 of Figure 2,
Figure 7 is a fragmentary sectional view taken on the line 1--1 of Figure l,
Figure 8 is a fragmentary sectional View taken on the line 8-8 of Figure 2,
Figure 9 is a fragmentary sectional view of the lower end of one of the uprights,
Figure 10 is a View similar to Figure 9, showing a modified form of anti-slipping means for the uprights.
Referring to the drawings, the numerals I5 and I6 designate generally a pair of ladders which may be either long single length ladders or extension ladders of conventional construction. In order to combine the ladders I5 and I6, to form a scaffold structure with the ladders leaning against the side of a building, I have provided a pair of upright extensible supports I1.
The upright I1 includes an upper elongated tubular member 26 v`telescoping over thejlower tubular member IB, and a pair of these. upright? are braced in vertical position by means ofxa pair of crossedbrackets'z! and 22. Theltubular-memvbers I8 vand '20 4are formed with spaced openings 23 and 24 respectively, which are adapted lto'be disposed. in registry and the tubular ,members I8 `and 12u are. vsecured. Jin llongitudinally adjusted `positionzby means of bo1ts1f25 Sexten'dingthrough selected registering openings 23 and 24. These bolts 25 also secure the ends of the braces 2I and 22 to the uprights.
The uprights are held in a vertical position parallel with the wall 26 against which the ladders I5 and I6 lean by means of a pair of Y-shaped combined braces and platform supporting members 21. The members 21 include a pail` of divergent arms 28 and an elongated shank or stem 29. The shank or stem 29 is extended through a loop or U-shaped member 30 which is Xed to an upper tubular member 2U and the shank or stem 29 is locked in the loop 3l] by means of a set screw 3 I.
The divergent arms 28 are pivotally secured to a pair of U-shaped members 32 which are fixed to the lower ends of a pair of downwardly extending rods 33 which are carried by caps 34. The caps 34 engage over the upper ends of the rails of the ladders I5 and I6 and the rods 33 extend parallel with and closely adjacent the forward edges of the ladder rails.
The arms 28 are pivotally secured to the coupling members 32 by means of a bolt 35. The lower end of each upright is anchored relative to the lower end of a ladder by means of a pair of anchoring bars 36 which are formed at their outer ends with a loop 31 through which the rail of a ladder is adapted to engage. The inner ends of the anchoring bars 36 are bent right angularly to form ears 38, and a bolt 39 is extended through the ears 38 and through the lower portion of the lower tubular member I8.
The combined Y-braces and platform supporting members 21 are adapted to have boards 40 mounted thereon, and a safety bar or cable 4I is secured between the upper ends of the uprights I1, being secured to caps 42 having ears 43. The lower end of lower member I8 may have a rubber cap or foot 44 mounted thereon as shown in Figure 8, or may have a point 45 secured thereto as shown in Figure l0.
In the setting up of the scaiold hereinbefore described, the ladders I5 and IB are disposed in a leaning position against the wall 26. The platform supporting members and braces 21 are supported from the upper ends of the ladders by the caps 34, and the tubular members 20 are then raised to the desired height so that the platform supporting members 21 will be in a horizontal position for engagement through the keepers or loops 30. The upper tubular members 20 are secured in extended position by the bolts 25 which also provide the securing means for the crossed braces 2l and 22. The scaffold structure hereinbefore described Will provide a relatively simple means whereby a carpenter, painter or the like may work on the outer side of a building with a minimum of equipment. As hereinbefore described, the ladders l5 and I6 may be either single length or extensible ladders and where extensible ladders are used the platform may be raised or lowered to the desired degree by extending or retracting the ladder section.
I do not mean to conne myself to the exact details of construction herein disclosed, but claim 20 4 from the lower ends of said uprights, a pair of horizontally disposed Y-shaped members. a pair of bars at the upper end of each ladder, caps carried by said bars engaging over the upper ends of the ladder rails, a pair of ears xed to the lower ends of each bar, means pivotally securing the divergent arms of said Y-shaped members between said ears, a loop xed to each upright, and means adjustably securing the shank of said Y- shaped member in said loop, a guard rail, and means securing said guard rail to the upper ends of said uprights.
FRANK A. YENCH.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 62,305 Baker Feb. 26, 1867 429,427 Dearborn June 3, 1890 444,280 Pepin Jan. 6, 1891 681,649 Chase Aug. 27, 1901 713,358 Stiles Nov. 11, 1902 762,658 Rouze June 14, 1904 1,474,289 Reimann Nov. 13, 1923 2,329,415 Osbourne Sept. 14, 1943
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US62305 *||Feb 26, 1867||Improvement in ladders|
|US429427 *||Jul 11, 1889||Jun 3, 1890||Folding scaffold|
|US444280 *||Sep 17, 1890||Jan 6, 1891||Frank pepin|
|US681649 *||Oct 5, 1900||Aug 27, 1901||James J Chase||Roof-bracket.|
|US713358 *||Jul 5, 1902||Nov 11, 1902||Alonzo L Stiles||Scaffold.|
|US762658 *||Sep 17, 1903||Jun 14, 1904||James F Rouze||Adjustable scaffold for ladders.|
|US1474289 *||Mar 13, 1922||Nov 13, 1923||Reimann Louis P||Ladder bracket|
|US2329415 *||Feb 19, 1943||Sep 14, 1943||Osborne William G||Scaffold|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2779561 *||Feb 18, 1954||Jan 29, 1957||Blundeau James H||Extension ladder jack|
|US2812220 *||Jan 12, 1954||Nov 5, 1957||King James H||Portable collapsible scaffolding|
|US3004621 *||Dec 8, 1959||Oct 17, 1961||Yench Sr Frank A||Scaffolding|
|US4823913 *||Apr 27, 1988||Apr 25, 1989||Riegel Jr Clifford S||Simplified self supporting scaffold structure having safety features|
|US6006862 *||Apr 7, 1997||Dec 28, 1999||Palmer; John||Temporary guard rail assembly for scaffolding|
|U.S. Classification||182/117, 182/108, 182/113, 248/238|
|International Classification||E04G1/00, E04G1/30|