US743692A - Store-service ladder. - Google Patents

Description

PATENTBD NOV. 10, 1903. P. J. DAEMIGKE. STORE SERVICE LADDER.

APPLICATION FILED NOV. 30. 1901.

N0 MODEL a a Q4760 UNITED STATES J'Patented November 10, 1903;

PATENT OFFICE.

PAUL J. DAEMIOKE, OF CHICAGO, ILLINOIS.

STORE-SERVICE LADDER.

SPECIFICATION forming part of Letters Patent No. 743,692, dated November 10, 1903- Application filed November 30, 1901. Serial No. 84.280. (No model.)

To all whom it may concern.-

Be it known that I, PAUL J. DAEMIOKE, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Store-Service Ladders, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improvement in respect to store-service ladders designed to increase the convenience of their use and their security in use. It consists of features of construction setout in the claims.

In the drawings, Figure 1 is a side elevation of my improved ladder in position of use. Fig. 2 is a detail section at the line 2 2 on Fig. 1.

My ladder is designed to be supported and guided upon a track A on the floor and to be supported at the upper end by leaning against a horizontal rail, the pin or like element which I attach to the ladder being checked to prevent the ladder from tipping forward by a second horizontal rail parallel with the first, between which and the first the pin travels as the ladder is moved sideward along the track.

B represents the side bar of the ladder.

G is a bracket secured to the ladder toward the upper end, jutting 01f therefrom rearward and having an upwardlyprojecting pin D, which extends between the horizontal rails E and F, the rail E being mounted upon the forward side of the case or upon the wall along which the ladder travels and the rail F being supported in front and parallel with the rail E by suitable hangers or brackets G, secured upon the'front of the wall or case and extending thence forward above the upper end of the pin D and thence downward in front to the point at which the rail F is socured. In the use of a ladder of this construction, in which the pin D is straight and without a horizontal projection'at its upper end, there is some liability to tilt the ladder sideward in running it along the track, and such sideward tilting may in extreme instances proceed so far as to permit the pin at one side of the ladder to become disengaged from between the rails E and F, and the wheel horizontal projection D, which may overhang one of the rails and prevent disengagement of the pin by downward movement. Specifically and preferably the projection D is made oblong, being narrow enough in one dimension so that it will pass between the rails and long enough in the other direction so that it will overhang one rail when turned properly for that purpose, and it is therefore made so that it can be turned from the position at which it will enter between the rails ninety degrees to a position at which it will overhang one rail. Preferably and as illustrated the projection D is adapted to be thus turned by making the whole pin, with which the projection is in that case made rigid, so that said entire pin may be turned about its axis. For this purpose the bracket 0 is provided witha socket O, in which the pin D is set and adapted to be turned. A bolt D ezrtends axially through the pin from above the projection to end in the socket and extends also through the bottom of the socket, which is apertured to allow it to protrude, and below the socket there is applied a thumb-nut D, which may be loosened to allow the pin to be turned and tightened to hold it socurely in position with the projection D overhanging the rail.

I claim-- 1. A storeservice ladder, adapted at the foot to rest and travel laterally on a fixed support, such ladder having an upper terminal pin in combination withasupport for the upper end of the ladder comprising horizontal rails, between which the terminal pin extends upward, and against the rear of which the pin rests to transmit'thereto the leaning weight of the ladder; brackets overhanging the path of the pin and supporting the forward rail, the pin having at its upper end an oblong projection adapted in one dimension to enter between the rails, and in the other dimension to overhang one of the rails, and

being normally out of contact with the rail 1 which it overhangs, a bracket secured to the ladder-having a socket in which the pin is lodged and adapted to rotate to turn the projection from position for entering between the rails to position for overhanging one of them, and means for releasably securing the pin in the socket.

2. A store-service ladder having an upper terminal pin, and adapted at the foot to rest and travel laterally on a fixed support, in combination with a support for the upper end of the ladder comprising horizontal rails between which the terminal pin extends upward, and brackets overhanging the path of the pin and supporting the outer rail, the pin having at its upper end an oblong projection adapted in one dimension to overhang one of the rails, and bracket securedv to the ladder having a socket in which the pin is lodged, and adapted to rotate to turn the projection from position for entering between the rails to position for overhanging one of them, a bolt extending axially through the pin and projecting below the socket, and a thumbnut applied to the projecting end of the bolt whereby the pin may be releasably clamped in the socket. 1

In testimony whereof I have hereunto set my hand, at Chicago, Illinois, in the presence of two witnesses, this 14Eth day of November, A. D. 1901.

PAUL J. DAEMICKE. In presence of-- LoUIs 001m, A. D. DAEMIOKE.

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