US802847A - Moving platform or inclined plane. - Google Patents

Description

No. 802,847. PATENTED OCT. 24, 1905. J. M. DODGE.

MOVING PLATFORM OR INCLINED PLANE.

APPLIOATION FILED JAN. 22.1898. RENEWED NOV. 21,1901

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No. 802,847. PATENTED 001?. 24, 1905.

J. M. DODGE.

MOVING PLATFORM 0R INGLINED PLANE.

APPLICATION FILED JAN. 22,1898. RENEWED NOV. 21,1901.

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PATENT OFFIOE.

JAMES M. DODGE, OF PH IIYADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE STAIR LIFT COMPANY, OF PHILADELPHIA, PENNSYLVANIA, AND CAM- DEN, NEW JERSEY, A CORPORATION OF N EVV JERSEY.

MOVING PLATFORIVI OR INCLINED PLANE.

No. soasav.

Specification of Letters Patent.

Patented Oct. 24, 1905.

Application fil d January 22,1898. Renewed November 21,1901. serial No. 83,186.

To all whom it may concern:

Be it known that I, JAMES M. Donen, a citi- Zen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Moving Platforms or Inclined Planes, of which the following is a specification.

My invention relates to improvements in moving platforms or inclined planes having Iv either a flat surface or steps, the main object of my invention being to so construct such moving platform or inclined plane when the same is composed of sections that it will be safe and con venient, there being no dangerous or otherwise objectionable gaps or spaces between the sections.

A further object of the invention is to drive the sections of the platform more effectively than usual and to distribute the load.

These objects I attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which Figure 1 is a longitudinal sectional view of a traveling inclined plane illustrating my invention. Fig. 2 is a plan view of the same, and Fig. 3 is a view showing my invention used in connection with a moving stairway.

In Figs. 1 and 2 of the drawings, which represent an upwardly-moving inclined plane, A represents a lower floor or fixed platform, B an upper floor or platform, and D the traveling inclined plane, made up of a series of sections d, adapted to ways E at each side. These sections are preferably disconnected and are pushed forward byadriving-wheel F at the bottom of the inclined plane, the teeth of said wheel engaging with the inner sides of the sections 66. In the structure shown in Fig. 1 I have also located another driving- 4 wheel F at the point where the sections are deflected upwardly from the platform B to form the abutment G, and in long runs more of these driving-wheels may be used, if necessary. The sections are adapted to suitable guides at the upper end, which connect with the return-guides, and the several drivingwheels are so operated that they will turn in unison, the purpose of the additional driver or drivers being to relieve the primary driver, 5 especially at or near the points where the platform changes direction, so that the apparatus will work evenly and without loss of power.

In some instances there may be an abutment at both ends of the inclined plane, so that the direction of travel of the sections can be reversed.

It will be understood that a series of drivers may be used in connection with a moving stairway and also that in carrying out my invention I may either use separate step-sections pushed or otherwise moved or enchained sections pulled or pushed. In Fig. 3, for instance, 1 have shown a movable stairway having step-sections which are driven at three pointsthat is to say, by a wheel F at the lower end of the structure, by a wheel F just after the sections turn to form the abutment, and by a wheel F just after said sections commence to rise to form the stairway, these being the points at which the greatest strains are developed.

My invention can be'applied to such an apparatus as set forth in the patent granted to G. A. Wheeler, No. 479,864, dated August 2, 1892, in which the step-sections are enchained.

I do not in this application claim specifically the form of my invention wherein the driving sprocket wheel or wheels engage enchained sections, for this forms the subject of my divisional application, filed October 11, v

1905, Serial No. 282,241.

I claim as my invention 1. The combination, in a moving stairway or inclined plane, of guides, sections arranged to travel on said guides, the main driving device at one end of the mechanism, an auxiliary driving device between the two ends of the stairway or inclined plane and engaging the moving portion thereof at a point where it changes direction of movement, substantially as described.

2. The combination, in a moving stairway or platform, of moving sections, guides whereby the sections are directed so as to form an abutment, and a driving device engaging the moving portion of the said platform or stairway at a point where the turn is made to form an abutment, substantially as described.

3. The combination, in amoving stairway or platform, of a moving portion, guides therefor, and a driving device engaging said moving portion on the carrying-run and also on the return run, intermediate the ends thereof, substantially as described.

4:. The combination, in a moving platform or stairway, of a moving portion, guides therefor, a driving device engaging the carryingrun of the said moving portion at a point be tween the two ends of the structure and at a point where the said carrying-run changes direction of movement, said driving device also engaging the return run of the moving portion, substantially as described.

5. In a device of the class described, the

combination with a portion moving throughout its course in a single vertical plane and made up of a series of sections, of fixed guides supporting said movable portion at both sides, and driving mechanism engaging the carrying-run of the said moving portion at a point between the two ends of the course and where it changes direction of movement, said driving mechanism also engaging the return run, substantially as described.

6. In a device of the class described, the combination with a moving portion, guides therefor, a sprocket-wheel engaging the said moving portion on its carrying-run at a point between the two ends of the course and where it changes direction of movement, said sprocket-wheel also engaging the said moving portion on its return run, substantially as described.

7. The combination, in a moving platform or stairway, of a moving portion made up of a series of sections, a driving sprocket-wheel at one end of the mechanism, and an auxiliary driving sprocket wheel engaging the said moving portion between the two ends of the platform or stairway and at or near a point where the moving portion changes direction of movement, substantially as described.

8. The combination, in a moving platform or stairway, of sections, guides therefor, a main driving device at one end of the mechanism. and an auxiliary driving device engaging with the said sections between the two ends of the platform or stairway and at or near a point where the sections change direction of movement, substantially as described.

9. The combination, in 'a moving platform or stairway, of movingsections, guides whereby the sections are directed so as to form an abutment, means for moving the said sections forward and a driving device engaging the sectionsas they turn to form the abutment,

substantially as described.

10. The combination, in a moving platform or stairway, of moving sections, guides therefor, and a driving device engaging the sections between the two ends of the platform or stairway and at a point where they change directions of movement, said driving device also engaging. the sections on the return run, substantially as described.

11. In a device of the class described, the combination with the series of connected steps, of ways in which said steps travel, and a driving mechanism intermediate the ends thereof engaging with both the ascending and descending parts of said series, substantially as described.

12. In a device of the class described, the combination with the moving sections of guides for said sections stationary relative to the movement thereof supporting said sections at both ends throughout their entire course, and driving mechanism engaging the sections between the two ends of the course and at a point where they change direction of movement, said driving device also engaging the sections on the return run, substantially as described.

13. In a device of the class described, the combination with the sections moving throughout their course in a single vertical plane, of guides for said sections stationary relative to the movement thereof and supporting them at both ends throughouttheir course, and driving mechanism engaging the sections between the two ends of the course and at a point where they change direction of movement, said driving mechanism also engaging the sections on the return run, substantially as described.

14. In a device of the class described, the combination with the sections moving throughout their course in a single vertical plane, of guides for said sections stationary relative to the movement thereof and supporting them at both ends throughout their entire course, and driving mechanism engaging the section between the two ends of the course and at a point where they change direction of movement, said driving mechanism consisting of sprocket-wheel engaging said steps on both the forward run and return run, substanto this specification in the presence of two subscribing witnesses.

JAMES M. DODGE.

Witnesses:

WILL. A. BARR, Jos. H. KLEIN.

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