US81276A

US81276A - Improvement in elevators

Info

Publication number: US81276A
Authority: US
Publication date: 1868-08-18
Anticipated expiration: 1885-08-18

Description

. .Tiff/75) nPETERs PHOTO-LIYHDGRAPMER, WASH NGTON D C UNITED STATES PATENEOFFIGE.

ERWIN T. HOPE, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN E'LEVATO RS.

Specification forming part of Letters Patent N0. 81,276, dated August 18, 1868.

To all 'whom it may concern:

Be it known that I, ERWTN T. HOPE, of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and improved Elevator; and l do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specication.

The nature of this invention relates to improvements in elevators, such as are used in hotels, warehouses, 85o.; the object of which is to provide a hydraulic elevator of more simple and cheaper construction than those now in use.

It consists of an arrangement of a series of vertical telescopic tubes and a plunger, on the top of which the carriage is supported, and moved between suitable vertical guides, when the said telescopic tubes are extended by the action of water forced in at the bottom to the lower tube, which is stationary.

Figure l represents a sectional elevation of my improved elevator, and Fig. 2 represents a plan view of the same.

Similar letters of reference indicate corresponding parts.

A represents avertical stationary tube, provided with anl enlarged base, which is firmly secured to a suitable bed. It is also provided with a flange, C, at the top, in which a stuffing box, D, is fitted, and by which it is connected, by the rods E, to a similar ange, F, of a movable tube, G, which is tted to work as a plunger within the baslof the tube A.

Any suitable number of such tubes may be arranged 011e within the other, to rise one out of the other by the action of the water, when forced in at the bottom, and connected by the rods E, to prevent each tube being forced too high on the uppermost tube; or it may be a solid plunger.

A carriage, H, is supported and provided with slides, I, to work in the grooved posts or guides K K. I prefer to make the slides double on each side, and separate them as much as possible, for the purpose of giving greater stability to the carriage.

L represents springs, ranged around each cylinder and between the same, for the purpose of preventing serious results from concussion when the tubes settle down together. I also propose to provide similar springs be-A tween the heads of the rods E and the iianges ot' the tubes, for a similar purpose, when the tubes are being extended.

Each succeeding tube should be made as much longer than the preceding one as the length of the stuffing-boxes, so that, when they are in a contracted position, all the tubes will reach to the bottom of the fixed tube A; and they may be so arranged that, when the water is introduced, the lowest tubes will rise rst, and the next succeeding, or the topmost may be moved rst.

M represents a rod, connected at the bottom with a three-way cock, N, and running to the top of the ways, whereby the ow of water into the tubes for elevating the carriage may be stopped -by persons on the carriage, or on any of the floors, and whereby the cock may be turned to allow the water to flow out, for the purpose of allowing the carriage to descend.

The top of the rod is provided with an arm, O, which, projecting into the path of the carriage, will be moved thereby to close the cock, and prevent the further ascent of the carriage when it has arrived at the highest point which it is desired to allow it to go. Another a-rm may lalso be provided at the bottom, to close the cock, and thereby stop the descent of the carriage at any point.

I claim as new, and desire to secure by Letters Patent- 1. Thecombination,withthetelescopictubes, of a carriage, H, and ways K, substantially as and for the purpose described.

2. The combination, with the telescopic tubes, of the rods E and cushions L, substantially as and for the purpose described.

3. The combination of the telescopic tubes, provided with cushions Land stufngboxes D, and connected by rods E, the grooved Ways K, carriage H I, three-way cock N, and rod M, having arms, as described, all substantially as herein set forth and shown, for the purposes specified.

ERWIN T. HOPE.

Witnesses T. L. LAUBACH, HENRY D. MOORE.