US511447A - Elevator - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

W. B, MORRIS.

- ELEVATOR. v -1 1@;511,44'7. Patented 1320.26, 1893. 1 7 .1 129-2 (No Model.) 2 Sheets-Sheet 2.

W. B, MORRIS. ELEVATOR.

' PatentedDeo. 26, 1893.

UNITED STATES- PATENT OFFICE.

WILLIAM BUTLER MORRIS, 0E SEATTLE, WASHINGTON.

ELEVATOR.

SPECIFICATION forming part of Letters Patent'No. 511,447, dated December 26, 1893. Application filed May 4, 1893- Serial No. 47$,Q03. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM BUTLER MOR- BIS, a citizen of the United States, residing at Seattle, King county, State of Washington, have Invented an Improvement in Elevators; and I hereby declare the following to be a full, clear, and exact description of the same.

My Invention relates to a novel elevator.

It consists in certain details of construction, which will be more fully explained by reference to the accompanying drawings, in which- Figure 1 is a vertical section of my invention on the dotted line ac-x-of Fig. 2. Fig. 2 is a transverse section of the same. Fig. 3, is an enlarged vertical sectional view of the winding drum, the links and adj unctive parts. Fig. 4, is a perspective showing a series of links, and showing one ofthe links discon nected.

The object of my invention is to provide an elevator with a novel; means for moving the cage or platform, and a means for raising the elevator to any desired height. 7

In the constructionof my elevator I employ a series of rigid links A which are connected together by pivot pins B fixed in one part and passing through slots in supplemental links carried by the adjoining link A, so as to have a certain amount of free motion within the slots. The uppermost of these links A has an extension 0 which projects into the line of travel of the elevator cage D so as to support the latter. The. links travel in a vertical channeled guide E as they are projected upwardly, in which guide a projecting portion of the cage also moves.

At the base of the apparatus is a drum F which is formed with rectangular sides adapted to receive the links and allow them to wind upon the drum. In the present case I have shown the drum consisting of end disks having rods extending between the same so as to form a rectangle upon which the links are deposited when the elevator is depressed, and from which they are unwound as the cage is forced upward. This drum is mounted upon a shaft G, upon one end of which is formed a screw-thread H,turningin afixed nut, the pitch of which is such that each rotation of the shaft moves the drum to one side or the other. If the cage is at its lowest point, and is to be raised, the drum will be correspondingly moved, as in the present case, to the right so that the links which connect directly with the cage will be in linewiththosewhicharejustleavingthedrum. As the shaft is rotated, and the cage is forced upward by the gradual unwinding of the links and forcing them up through the channels of the guides, the drum is correspondingly moved to the right, so that'each link will be maintained in line with the channel of the guide up which it is to pass. The'length of the drum and the screw,- and the distance which the drum is moved to one side or the other, depends upon the height to which the cage is to be elevated. The drum is rotated in any suitable or desired manner by means of gear and pinion or other connection with the source of power, whereby the drum shaft may be rotated in either direction. Each supplemental link has projecting from its lower-end a projection J which fits upon one of the rods formingthe angles of the rectangular drum, and this serves as a guide when the chain is being deposited upon the drum by the lowering of the cage. When the cage is to be elevated, a rotation of .the drum in the opposite direction forces the links upward in the channeled guide as they are gradually uncoiled from the drum, each of. the angles of the rectangular drum acting upon one of the projections J so as to apply the power to force the linksnpwardly. Thes'e supplemental links are hinged between two parts of each link A, and have a certain amount of motion which allows them to take the proper position with relation to the drum when the links A are being coiled upon or uncoiled from the drum. The slot in which the hinge pin moves at the junction of the links, also allows a certain amount of play at this point, so that the chain will coil readily upon the drum. When the drum is rotated so as to.

raise the cage, the action of the rectangularly arranged bars of the-drum upon'the projections J, before described, forces the links and the cage upwardly until another linkA of the chain is brought into direct line with those struction that as the links are unfolded from the drum and forced upwardly in the channeled guides, any cage and platform carried by them, will be correspondingly moved upward, and when allowed to come down they are coiled upon the drum which, as before described, has an end motion so as to keep that portion of the drum which is to receive a descending portion of the chain, just in linebeneath the Vertical guide channel in which the chain travels.

In order to prevent the descending parts of the chain from overriding those which are already in position upon the drum, 1 have shown the flanged guide roller K mounted upon a spring actuated arm L which allows the roller to move in and out to accommodate itself to the movement of the chain as it coils upon or uncoils from the rectangular drum. This roller is outside of the links and is journaled above the drum shaft. Upon the inside of the chain is mounted another grooved guide roller N, the center of which is somewhat above the center of the roller K, and the latter again is situated above the shaft of the drum, as stated.

In order to counterbalance the chain links and the cage I have shown a second chain 0 which coils about the drum or an extension of it in the same direction with the link elevator chain. This chain passes up over a pulley P at the top of the apparatus, thence down upon the opposite side, and is provided with a weight Q of any desired size. If but one set of links be employed,it will be found desirable to employ a friction pulley R upon the opposite side on top of the cage to reduce the friction at this point.

This device is especially useful as a hoist for buildings which are being constructed, as the guide can be put in for the first story. Then when that is completed, it is only necessary to extend the guide for the second story, and so on until the building is conipletecl. lVhen this is done, the elevator is also ready for permanent work.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. An elevator consisting of the elevator cage, the rigid chain links upon the upper one of which the elevator cage is supported, a channeled vertical guide in which the links of the chain travel, a rectangular drum upon which the links are coiled when the cage descends and through which power is applied to uncoil the links and force them and the cage upwardly, substantially as herein de scribed.

2. In an elevator, the combination of the elevator cage a rectangular drum, rigid chain links having a length equivalent to the sides of the drum and adapted to be coiled thereon, a channeled vertical guide for the elevator cage in its ascent and descent the chain links traveling in the channel in said guide as they are forced up and down, and a counterbalance chain and weight adapted to coil upon and uncoil from a drum simultaneously with the movement of the lifting links, substantially as herein described.

3. In an elevator, the combination of the elevator cage, a rectangular drum, the series of slotted links adapted to coil upon andbe uncoiled from said rectangular drum whereby said cage supported by said links is forced upward or allowed to descend, and pivot pins one of which is fixed in each link and passes through the slotin the adjoining link, whereby the links are allowed to slide with relation to each other when coiling or uncoiling upon the drum, substantially as herein described.

4. An elevator consisting of an elevator cage, a drum having end disks with rods extending horizontally from one to the other and forming a rectangular support, a chain consisting of connected slotted and forked links and supplemental links connecting each of the slotted and forked links with the upper end of the next below, said supplemental links having projections J and forming shoulders to abut against each other and relieve the strain upon the hinge pin when thelinks are extended in line to support the elevator cage, substantially as herein described.

5. An elevator consisting of an elevator cage arectaugular rotary drum, achain formed of sections loosely united and adapted to coil upon the rectangular drum when the elevator cage is down and to be uncoiled therefrom when the cage is raised, a channeled guide for the cage in its movements, and within which the links of the chain are guidedin their upward and downward movements, a flanged roller journaled upon a spring-actuated arm and adapted to travel between the parts of the chain to prevent their overriding when coiling upon the drum, substantially as herein described.

6. An elevator consisting of a rectangular drum, mechanism by which it is rotated, chain links loosely connected together and adapted to coil upon and be uncoiled from the drum, a guide having a channel in line above the links into which they are forced by the uncoiling from the drum, an elevator cage guided in its movement by the vertical channeled guide, and supported upon the uppermost link of the chain so as to be moved there by, a screw-threaded shaft upon which the rectangular drum is mounted, a fixed nut through which the screw travels whereby the drum is moved to left or right to retain the coiling and uncoiling chain in line with the guide channels, substantially as herein described.

In witness whereof I have hereunto set my hand.

WILLIAM BUTLER MORRIS. Witnesses:

W. S. RELFE, M. E. WARD.

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