US663786A - Sidewalk-elevator. - Google Patents

Description

No. 663,786. I Patented Dec. u, i900. J. RIEG.

SIDEWALK ELEVATOR llyplication flled Aug. 30, 1900.:

NITED STATES ATFNT FFICE.

JACOB RIEG, or WILKES-BARBIE, PENNSYLVANIA.

SIDEWALK-ELE VATOR.

SPECIFICATION forming part of Letters Patent No. 663,786, dated December 11, 1900.

Application filed August 30, 1900. $erial No. 28,505. (No modeLl To all whom it may concern..-

Be it known that I, JACOB RIEG, a citizen of the United States, residing at WVilkes-Barr,

in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Sidewalk-Elevators, of which the following is a specification.

This invention relates to improvements in sidewalk-elevators, which will be pointed out in the following specification.

In the accompanying drawings, Figure 1 is a front perspective view of my invention. Fig. 2 is a rear view of the upper portion of the elevator. Fig. 3 is a side view of the ele- Vator, partly broken away; and Fig. 4 is a longitudinal central section through the base, the platform and foot of the elevator being shown in dotted lines.

Referring to the drawings, 1 and 2 indicate parallel guideways which are connected at regular intervals by cross-pieces 3, forming a step ladder. The guideways are provided with laterally-extending flanges 4, and the triangular platform 5 is provided with arms 6, having guide-rollers 7, which extend behind the flanges 4. Ribs 8 are also provided on the back of the platform, on the inner sides of the guideways, and the platform is guided by these ribs and rollers. A pulley-frame consisting of two parallel plates 9 and 10 is arranged between the upper ends of the guideways, and within this frame are arranged pulleys 11, 12, 13, and 14, around which the rope extends in azigzag manner. Arearwardlyextending lug 16 is secured to the back of the platform, and the rope 15 extends through an opening in said lug, the platform being supported by a knot 17 in the rope, which bears against the under side of said lug. The steps 3 are cut away centrally, as shown at 18, in order to permit the rope and the lug to pass by them without interference. Pivoted to the rear of the pulley-frame is a lever 20, having at its lower end a right-angled catch 21, adapted to pass under the lug 16 and support the elevator when it is raised to the sidewalk. The upper portion 20 of the lever is bent forwardly and extends up between the parallel that the catch will come under the lug on the platform by merely moving the rope to the left in Fig. 2, thus locking the platform without loosening the grip on the rope. To release the catch when it is desired to lower the platform, the rope is pulled to the right, drawing with it the upper end of the lever and forcing the catch outward to the left. Fig. 3 shows the platform supported by the catch at the top of the guideways.

In order to facilitate loading and unloading the platform at the bottom of the elevator, I provide a base 23, consisting of a box having an inclined face 24 and a well or opening in the rear of said face into which the platform may descend. Lugs 25 are arranged on the outer sides of the guideways at their lower ends, and inclined guide-blocks 26 are arranged upon the inner sides of the base and adapted to pass between the flanges of the guideways and the lugs 25, as shown in dotted lines, in order to hold said guideways in place. The inclined face of the base rises to the level of the platform when the latter is within the well, so that freight may be readily loaded onto and removedfrom the platform. This base is particularly desirable for damp cellars, as it gives a broad bearing for the ladder, and without it the freight would have to be lifted the height ofthe platform.

Adj ustable stop-blocks 28 are secured upon the platform, and these may be moved to any desired position along the skids 27, a pin secured to each block being adapted to pass into any one of a series of openings in the top of the platform adjacent to the skids. The device forms a convenient step-ladder, when not in use for hoisting or lowering. The pulleys at the top steady the movement of the rope in hoisting or lowering.

Having described my invention, what I claim, and desire to secure byLetters Patent of the United States, is-

1. In a sidewalk-elevator, a pair of parallel guideways united by cross-pieces, a platform movable along said guideways and having a lug projecting from its rear side, a lever pivoted near the upper end of the guideways, said lever having a catch at its lower end, and a rope secured to said platform and passing through an opening in the upper end of said lever.

2. In a sidewalk-elevator, a pair of parallel guideways having a transversely-arranged pulley-frame at its upper end and pulleys arranged therein, a lever pivoted to said pulleyframe and having a catch at its lower end, a platform movable along said guideways, a lug secured to the platform and adapted to be engaged by the catch, and a rope secured to the platform and passing around said pulleys and through an openingin the upper end of the lever.

3. In a sidewalk-elevator a pair of parallel guideways united by cross-pieces forming a ladder, a platform movable along said guide ways, a base for said ladder having a Well adapted to receive the platform, said base havingan inclined face, a lug projecting rear- Wardly from the platform, a lever pivoted near the upper end of theguideways,said lever having a catch at its lower end adapted to engage said lug, and a rope secured to said platform and passing throughan opening in the upper end of the lever.

In testimony whereof I affix my signature in presence of two Witnesses.

JACOB RIEG.

WVitnesses:

ROBERT WATSON, J. A. WIEGAND.

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