US820467A - Step-ladder. - Google Patents

Description

No. 820,467. PATBNTED MAY 15, 1906.

W. P. BIEIALE.

STEP LADDER.

APPLICATION FILED AUG. 11. 1904.

WITN E5SE6. INVENTOR MM ZvA-wma M M26 BY 6 m 1 76 WILLIAM F. BEALE, OF LOS ANGELES, CALIFORNIA.

, STEP-LADDER.

Specification of Letters Patent.

Patented May 15, 1906.

Application filed August 17,1904. Serial No. 221,125.

To all whom it 'Wl/(I/Z/ concern:

Be it known that I, WILLIAM F. BEALE, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Step-Ladders, of which the following is a specification.

The object of my invention is to provide a step-ladder which when spread apart in the usual manner will hold itself in its spreadout position without the use of the ordinary guy-rope which secures the strut to the ladder proper and at the same time hold the stepladder in a rigid position and prevent the strut from folding against the ladder-frame unless the strut is pulled down in the head so as to permit it to fold up. I accomplish this object by means of the device described herein and shown in the accompanying drawings, in which Figure 1 is a perspective view of a ladder embodying my invention. Fig. 2 is a view of a step-securing plate in place under the step of the ladder, the frame and the step of the ladder being broken away. Fig. 3 is an enlarged view of the head of the ladder with my head improvement shown therein. Fig. 4 is a perspective view of the step-securing plate before it is attached to the ladder.

In the drawings, A represents the usual upright supports, upon which the steps B are secured 1n the following manner-that is to say, a step-securing plate C is first secured at each end on the under side of the step B, the brads D being driven into the step B, the end of the plate 0 projecting out and beyond the end of the step, as shown in dotted lines in Fig. 2, the brads Dprojecting through the upright A and being clenched on the outside, as shown in Fig. 1. In the construction of these ladders in quantities the stepsupporting plates 0 are secured on the under side of the steps on each end thereof, the brads D having passed the step, theend C of the plate 0 projecting beyond the end of the step. These steps, with the plates secured thereto, are between the uprights properly spaced apart and are secured to the uprights by pressing the uprights firmly together against the ends of the steps, the projecting ends C of the plate penetrating into the body of the upright A, the projecting ends of the brad D being turned over and clenched, forming a rigid and solid connection between ithgdsteps and the upright supports of the a er.

form. This head-plate E is provided with an aperture G, providing clearance for the head-engaging lugs H. This aperture is provided with a notch or socket G in the lower corner thereof and a notch or socket G in the upper corner thereof. These sockets are adapted to receive and engage the ends H and H of the head-engaging lug II on the strut I. In the drawings, Figs. 1 and 8, the strut is shown in its open or spread-out pos1- tion, and the plate-engaging lug H, rigidly secured on the top end thereof, is shown projecting through the recess G in the plate E, the upper end H of the lug projecting into the socket G and will hold in this position the strut in its open or spread-out position, as shown in Figs. 1 and 3. l/Vhen in this position, the ladder is ready for use.

When it is desired to remove the ladder and fold it up for transportation or to lay it away, the strut I is pulled down, carrying with it the lug II. This will remove the upper end I of the lug from the upper socket in the head-plate and permit the ladder to be folded together, and when the ladder is folded together the strut may be pushed downwardly, carryingthe lower end H of the lug down into the socket G of the head-plate. This will hold the steps and the struts rigidly in the folded position for storing away or for transportation.

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

1. The combination with an upright of a step-ladder having a head-plate thereon, said head-plate provided with an aperture, the top and bottom of the apertureprovided with notches, of a strut having a lug at its upper end which enters the aperture the upper end of the lug received in the upper notch and resting against the upper side of the aperture, and the'other end against the opposite lower side when the ladder is in extended position.

2. In a step-ladder, the combination of a head-plate secured to the top of the ladder, said head-plate provided with an aperture IIO whose center is of a less width than its ends, of astrut having a lug secured at its upper end which enters the aperture, the lug being of greater length than the Width of the aperture whereby it is capable of only a limited turn therein.

3. In a step-ladder, the combination of a head-plate secured at the top of the ladder, said head-plate provided with an aperture Whose center is of a less diameter than its ends, and a strut having a lug at its upper end which enters the aperture, said lug swinging on the points at the center of the aperture as a pivot for adjusting the ladder in its open and closed'positions.

4:. In a step-ladder, the combination of a head-plate secured at the top of the ladder,

' said head-plate provided with an aperture whose center-is of less diameter than its ends, said aperture having notches at its upper and lower ends, of a lug on the upper end of the strut which enters the aperture, and is received in the upper notch of the aperture when in its extended position.

5. In a step-ladder, the combination with a head-plate having integral brads projecting from one side and an edge to enter different parts of a step-ladder, the head-plate having an aperture, an edge of which is in the form of an obtuse angle with notches at each end thereof, of a strut having a lug adapted to enter the aperture and its ends to enter one or the other of said notches, whereby the strut is locked in one or the other of its extreme adjustments.

In witness that I claimthe foregoing I have hereunto subscribed my name this 9th day of August, 1904.

WILLIAM F. BEALE.

Witnesses:

HENRY T. HAZARD, G. E. HARPHAM.

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