US1542775A

US1542775A - Equalizer for ladders

Info

Publication number: US1542775A
Application number: US10069A
Authority: US
Inventors: Harry F Husted
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-02-18
Filing date: 1925-02-18
Publication date: 1925-06-16
Anticipated expiration: 1942-06-16

Description

Jullt 16, 1925.

1,542,775 H. F. HUSTED EQUALIZER FOR LADDERS Filed Feb. 18. 1925 INVENTOR.

V Zurogzvtv.

Patented June 16, 1925.

rile,stares ear-EM ore! :HAlBsR'YwF. nusmnn, 5oz DALLAS, PENNSYLVANIA;

EQUALIZEK we appens- Application filed February T0 (ZZZ 107mm .z't'flnag/ 0011mm.-

- Be it"kiiown that LfHARRnF. HUs'raD a citizen of the UnitedStates, residing atDallas in the county ofLuzerne and" State of Pennsylvania, have invented certainnew and useful Improvements in Equalizers for Ladders,' of which the following is a specification.

This invention relates to an adjustable foot device for laddersand hasfor itsobject to provide, in a manner as hereinafter set forth a device. of such '(class with means to prevent the body of a ladder from inclining in a transversedirection fronifthe vertical thereby maintaining. the (ladder. equalized :WllQll mounted on {an inclined or irregular shaped supporting surface; i

A further object of thefinvention is to provide, in a manner a as hereinafter set forth, an adjnstablejfoot or equalizing device for a ladder including means for locking the device in adjusted position .to maintain the {ladder equalized when the device is mounted on an inclined or irregular shaped supporting surface. i

'A further object of the invention is .to provide, "in i a manner, vas hereinafter set "forth, afoot or equalizing device; for alad- Jder includingabodiflv shiftableladder carrier automatically tdj'ustableby theweight silient, bodily shif table "ladder equalizing carrier. v

*Furtherobjects'rofsthe invention are to p'1 ovide, i1i a manner a an equalizing device for; ladders :ivhich; i. simple in its construction and arrangement, strong; durable, *conipact, thoroughly efiifeient and comparatively inei ipensivevtoinanui'iacture. i

' i'th' the foregoing and other objects in viewythe invention consists. of the ,DOYQl construction, combination and arrangement o'f parts', as hereinafter more specificallyfdescribed and "illustrated in the accompanying 1 ill.

of the inventionfisf to s"hereina-fter: set forth, j

' he plate wings, wherein. isshovvn an embodiment 18 1925. Serial No.310,069.

of the invention, but it is to be understood that changes, variations and modifications can-be resorted to which fall within the scope of the claims hereunto appended.

In jthe drawings *W-llQlGlll like refer enechaiacters -denote @corresponding parts throughout the several views:

Figure *1,--is. a sectional elevation 'of an adjustable foot or equalizing 'dev-ice in accordancewith this invention, and fur-ther showingthe adaptation thereof in connection-iv-ith the lower end of a ladder.

Figure 2, is a fragmentary v-ieW,-}in front elevation, uponamen-larged scale.

Figure 3, is section on} line 3-3, ure -E Z. r V

Figure 4a, is asec't-ion on -l;-ine-4-4,-Figure I 1 Figure 5 isa section on line f'iti F-igure 1. Referring to the draivingsdn detail '1 denotes the lower round and 2, 3,the sidebars of a ladder and connected to, arranged between and projecting from the lower ends of said side-bars'is t n-adjustable -footor equalizing device in accordance With this invention. v

' The footer-equalizing device comprises, a: pairofsupporting elementseach forming ahohsihgand consisting of avertically 'd-isposed rectangular flat metallic plate' tyhai ingsecu-red against the lGWBI fEEIIHiHQil portionof its innerzfacey by the. countersunk holdfast devices 5,-a polygonal shaped block '6; ;.pret"erabl3 construotedof avoo'd and-which constitutes a foot .piece. Positioned against I theinnerface of the plate at, as Well asmountedonthe-top of the-foot---piece-6,"is a ver- :ticalgly disposed channel-shaped -1ne1nber'7,

which in connection -with the plate A: pro- *vides a polygonalshaped -socket '8. The member 7. is forinecl-\vi-tli apair-of -oppositely disposed; "lengthwise eXtend-ing flanges =9,=-10,-Which abut againstthe-'inner-face of the-plate- 51- and are fixedly securedto the lat- 'ter by the countersunk hold fast devices 11. Theaneinbe-ri'r' isflush withithe top edge -0f 4c.) and the fl-

anges

9, 10, are flu'sh with i the side and top edges of the latter.

Extending-intoeach-socket 8 to the bottQXllOf the latter -formed by-the top of the footpiece'G ,is one end terininal portionof v a contractile and expan's'ible arch-shaped combined coupling and supporting--member '12 formedfrom a strap' of spring metal. The endterminal portionsiofthe member 12. are indicated at -13"ande ach is-posi-tioned against the inner face of a plate 4, as well as being fixedly secured to the latter, by a series of spaced countersunk hold-fast devices 14.

Slidably mounted in the sockets 8, supported by the member 12 and secured to side bars 2, 3 of the ladder is an automatically adjustable, contractible and expansible bodily shiftable ladder equalizing carrier comprising an arch-shaped coupling member 15, formed from a strap of spring metal and having its end terminal portions 16 slidably niounted in the sockets 8. Secured to the outer face of each end terminal portion 16, by the countersunk hold-fast devices 17, is a vertical disposed polygonabshaped guide bar 18 which is of greater length than an end terminal portion 16, flush at its lower end with the lower end of the latter, and further extending a substantial distance above the end terminal portion 16, and

spaced from the intermediate or curved portion of the member 15. Secured to the outer side face of each of the bars 18 at the upper portion thereof, is the inner arm 19 of an angle-shaped bracket 20. The outer arm of the bracket 20, is indicated at 2i and is se cured to the lower portion of the front face of a side bar of the ladder. The arms 19 space the bars 18 from and maintains the carrier inwardly with respect to the side bars of the ladder. The arms 19 are secured to the bars 18 by countersunk hold fast devices 22 and each of the arms 21 is detachably connected to a side bar 2 or 3 by member 15, and the foot pieces 6 mounted on an inclined or irregular supporting surface,

' the weight of the ladder will automatically .shift the carrier until the position of the ladder has become equalized, after which the

members

12 and 15 are clamped together by the screw 29 and the carrier will be retained in the position to which it has been adjusted. The member 15 shifts upon the member 12, the latter providing a support for the former. The carrier is guided by the bars 18, in connection with the walls of the sockets 8, and furthermore the bars 18, in connection with the walls of the sockets '8 prevent the spreading relatively to each other of the end terminal portions 16 of the member 15. The two

members

12 and 15,

an adjustable foot or equalizing device for ladders, in accordance with this invention, can be readily understood, and although the preferred embodiment of the invention as described and claimed, yet. it is to be understood that changes in the details of construction can be had which will fall within the scope of the invention as claimed.

Having thus described the invention what I claim is:

1. An equalizing device for ladders comprising a pair of socketed supporting elements opposing each other, an arch-shaped resilient member coupling said elements together, and an arch-shaped, resilient, automatically adjustable ladder carrier slidably extending into said elements, mounted on said member and having means for connection to the lower ends of the side bars of a ladder, said carrier adjusted by the weight of the ladder when said elements extend 1 one above the other.

2. An equalizing device forladders comprising a pair of socketed supporting elements opposing each other, an arch-shaped resilient member coupling said elements together, and an arch-shaped, resilient, automatically adjustable ladder carrier slidably extending into said elements, mounted on said member and having means for connection to the lower ends of the side bars of a ladder, said carrier adjusted by the weight of the ladder when said elements extend one above the other, and means secured to said carrier and engaging said member for securing the carrier in adjusted position.

3. An equalizing device for ladders comprising a pair of socketed supporting elements opposing each other, an arch-shaped resilient, member coupling said elements together, and an arch-shaped, resilient, auto matically adjustable ladder carrier slidably extending into said elements, mounted on said member and having means for connection to the lower ends of the side bars of a ladder, said carrier adjusted by the weight of the ladder when said elements extend one above the other, and said carrier having a pair of guide bars slidably mounted in said elements and carrying the means of connec tion with the side bars of the ladder.

4. An equalizing device for ladders comprising a pair of socketed supporting elements opposing each other, an arch-shaped resilient member coupling said elements to gether, and an arch-shaped, resilient, auto matically adjustable ladder carrier slidably extending into said elements, mounted on said member and having means for connection to the lower ends of the side bars of a ladder, said carrier adjusted by the Weight of the ladder when said elements extend one above the other, and means secured to said carrier andengaging said member for securing the carrier in adjusted position, and said carrier liavinga pair of guide bars'slidably mounted in said elements and carrying the means of connection with the side bars of the ladder.

5. An equalizing device for ladders comprising a pair of socketed supporting ele- V ments opposing each other, an arch-shaped resilient member coupling said elements together, and an arch-shaped, resilient, automatically adjustable ladder carrier slidably extending into said elements, mounted on said member and having means for connection to the lower ends of the side bars of niatically adjustable ladder carrier slidably extending into said elements,.mountedon said member and having means for connection to the lower ends of the side bars of a ladder, said carrier adjusted by the weight of the ladder when said elements extendone above the other, and means secured to said carrier and engaging said member for securing the carrier in adjusted position, the means of connection to the ladder consisting of a pair of brackets each formed of a pair of arms disposed at right angles to each. other.

7. An equalizing device for ladders comprising a pair of connected, spaced socketed supporting elements opposing each other and an arch-shaped, resilient automatically adjustable ladder carrier having vertical guide bars slidably mounted in and projecting upwardly from said elements and adjusted by the weight of the ladder to equalize the position thereof when one of said elements projects above the other.

8. An equalizing device for ladders comprising a pair of spaced socketed supporting elements opposing each other and having an arch-shaped connection therebetween, and an arch-shaped, resilient automatically adjustable ladder carrier having vertical guide bars slidably mounted in and projecting upwardly from said elements and adjusted by the weight of the ladder to equalize the position thereof when one of said elements projects above the other, and means for detachably securing said carrier in adjusted position to the connection between said elements.

In testimony whereof, I affix my signature hereto.

I HARRY F. HUSTED.