US302003A - Hydraulic elevator - Google Patents

Description

2 Sheets-Sheet 1. A. F. KNORP.

HYDRAULIC ELEVATOR.

' (No Model.)

Patented July 15, 1884.

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HYDRAULIC ELEVATOR.

nted July 15, 1884.

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UNITED S'rrrrrs PATENT @rrrcs.

ALBERT F. KNORP, OF SAN FRANCISCO, CALIFORNIA.

HYDRAULIC ELEVATOR. Y

SPECIFICATION forming part of Letters Patent No. 302,003, dated July 15, 1884.

Application filed August 13, 1883. (No model.)

exact description thereof.

My invention relates to certain improvements in that class of elevators in which the cage or platform is supported upon the top of a vertically-moving column or piston-rod, which is forced up, so as to elevate the cage, by the pressure of a column of water; and it consists of a means for holding the sections together which form the column, and preventing their separation in case the joints become broken or detached.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1 is a vertical section of a hollow ramrod with my attachment: Fig. 2 is a similar section showing a solid ram with my device. Fig. 3 is a view of one of the end yokes. Fig. 4 is a view of one of the interior guides to steady the rod. Fig. 5 is an enlarged View showing one form of connection for the ends of the rods. Fig. 6 is an elevation showing the cage and counter-weights.

A A are tubular or solid sections forming an elevator-column, and having joints at B, by which the sections are united and held together in a single shaft. These sections maybecome separated by accident, and my invention is designed'to prevent the lower part from becoming detached and falling down, or the cage from being carried up by the counter-weights.

' It consists of a tube or rod, G, which extends up through the center of the column.

' When these rods are used, they inay be made to the proper tension by nuts F, thus holding,

of solid lengths,having the ends bent into hook form, so as to beunited, asshown at D. If the column be made of wood or other material and solid, as shown in Fig. 2, a-hole is bored centrally through the length of each section, and the rods are passed through this hole, extending from top to bottom of the column. Atthe top and bottom of the column are fixed heads or yokes E, through which the rods pass, and where they may be drawn the wholerigidly together. The columns are 'vators one of the most fatal.

usually made of hollow tubes, twelve or eighteen feet long, screwed together and turned to a smooth finishupon the outside, so as to "pass water-tight through a stuffing-box, K, in the top of the tube in which they move. They are very heavy, and when the cage is near the third or fourth floor, with some sixty or seventy feet of the column forced out of the tube,

the power necessary to force them up is greatly increased. To partly overcome this, heavy counter-weights Hare attached to ropes I,

passing over pulleys at the top of the building, and thence down to the cage, to which they are attached, the said cage resting upon the top of the column, as shown in Fig. 6.

. N ow the'tubes forming the column are there, and thejoints between the sections cannot be as strong as desired, either in a hollow or a solid column, and if by accident the column should. separate, the lower part might sink rapidly into its tube; but the cage, released from its weight,would be shot upward by the action of the counter-weights, and thus render what appears at first sight the safest of ele 7 5 My invention serves to hold the whole length of the column together bymieans of these interior bindingrods extending from top to bottom, and so fixed at eachendthat even if the column should so separate it could not fall or producea dangerous accident. If the column be made tubular and" hollow, guides or stays G are secured within it at intervals, through which the rods, pass, and, are thus prevented from swaying from side to side,and are held in their central position.

If desired, the central rod may be made of tubular iron pipes having stout couplings at theirmeeting ends, and secured in yokes at the ends of the column, as before described.

Havingthus described my invention, what I claim as new, and desire to secure by Letters Patent, is l 1. In an elevator consisting of a vertically- Inoving plunger or ram, a means for holding the sections together, consisting of a central rod extending from end to end,and secured in yokes or end pieces, substantially as herein described,

2. In an elevator consisting of plunger or ram sections united longitudinally, the'central IO rior rod extending through the column, and

secured in yokes or end pieces, so that the tensile strain is exerted to hold the sections of the column together.

In witness whereof I have hereunto set my hand.

ALBERT F. KNORP.

Witnesses:

S. H. NoURsE, J 0s. A. BAYLEss.

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