US547105A - Adjustable hod-elevator - Google Patents

Description

(No Model.) 2 Sheetssheep 1.

J. ADAMS. ADJUSTABLE HOD BLEVATOR.

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R. 0 T A V .E SE MD AO DE A E .L TUM ml. S U J D A (No Model.)

Patented 001;. 1 1895.

M. PHUTULHNUWASHINGTBN. 0.6.

IINTTED STATES JAMES ADAMS, OF CHICAGO, ILLINOIS.

PATENT Turcs.

ADJUSTABLE HOD-ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 547,105, dated October 1, 1895.

Application led February 23, 1895. Serial No. 539,369. (No model.)

.To @ZZ whom it may concern.: y

Be it known that I, JAMES ADAMS, a citizen of the United States, residing at Chicago,in the county of Cook and State of Illinois, have in vented certain new and useful Improvements in Adj ustable I-Iod Elevators, of which the following is a specification.

This invention relates to improvements inv elevators to be used in buildings for lifting hods, wheelbarrows, dsc.; and it consists in certain peculiarities of the construction, novel arrangement, and operation of the various parts thereof, as will be hereinafter more fully set forth and specifically claimed.

The objects of my invention are, first, to provide a bod-elevator which shall be simple and inexpensive in construction, strong and durable, yet effective in operation; second, such an elevator upon which two or more hods and a wheelbarrow may be lifted at the same time, and, third, such an elevator the parts of which may be so adjusted as to pass between joists of different distances apart.

In order to enable others skilled in the art to which my invention pertains to make and use the same, I will now proceed to describe it, referring to the accompanying drawings, in Which-m Figure 1 is a perspective view of my elevator, showing it resting on the joists of a building and its parts so constructed and arranged as to elevate the greatest number of hods and a wheelbarrow or other device which may be placed upon the platform. Fig. 2 is a similar view of the device, showing it located on the joists of a building, the same being close together and the parts of the elevator being so constructed and arranged as to pass between the narrow spaces of said joists. Fig. 3 is an enlarged central sectional view of a portion of the shaft upon which the sheaves and sprocket-wheel are mounted, showing the hub of the same provided with antifriction ball-bearings. Fig. 4t is a plan sectional view of a portion of the drivingshaft and one of its bearings. Fig. 5 is a bottom plan view of the platform used in the construction shown in Fig. 1 of the drawings, showing it detached from the cage. Fig. 6 is a detail perspective view of one of the rests for the hod. Fig. 7 is a perspective view of a portion of aguide-rod, the securingdevices therefor, and a guide-arm for the platform.

Fig. 8 is a perspective view of the upper por# tion of the cage. Fig. 9 is a similar viewrof one of the lower cross-bars thereof; and Fig. 10 is an edge view of a portion of the platform, showing it made of two pieces hinged together.

Similarletters refer to like parts throughn out the diiferent views of the drawings.

A represents the main or supporting frame of my device, which is made of any suitable size, form, and material, but preferably of substantially the form shown in Figs. 1 and 2 of the drawings-that is, having four legs a, which are suitably braced or connected together at their lower portions by means of bars or rods ct and at their upper part by means of a transverse piece a?, which supports the guide-rods a3, which are used for the purpose of guiding the platform and cage, as will be presently explained. In the top of the main or supporting frame A is fixed a shaft B, 'upon which is mounted a hub C, which is provided near each of lits ends with recesses c, in which are located antifrictionballs c', which balls are held slightly apart by means of a collar c2, which is triangular in cross-section and encircles the shaft B, as isshown. The balls c are confined within the recesses c by means of the collars C, which are secured on the shaft B by means of set-screws c3 or otherwise. On the hub C are the grooved sheaves D and D', the latter of which is much smaller in circumference than the former. The hub C is also provided with a sprocket-wheel E, over which passesa chain E to engage either of the sprocketwheels E2 or E3, mounted on the driving-shaft F, which shaft has its bearings about midway in the sides of the main or supporting frame and is provided at each of its ends with crank-handles f for turning the same. The legs ct of the main or supporting frame are provided about their middle with brackets or plates g, which are secured to the adjacent surfaces of the legs and are formed with re-` cesses h to receive the lugs h of the transverse pieces I-I, in which is formed recesses h2 for the reception and retention of anti- IOO friction-balls c', which are held slightly apart g sheaves D or D is a cable Lone end of which is secured to the upper portion L of the elevator cage or frame L. This upper part L is made of two pieces which overlap another piece, as shown in Fig. 8 of the drawings, and may be extended, when so desired, by removing the nut-screws Z, which secure them together, when they maybe adjusted to the desired length and again secured by means of the bolts or screws. The lower portion of the frame or cage L is also provided with an eX- tensible bar Z', which is shown in Figs. 1 and 9 of the drawings, and it is obvious that the same may be extended by removing the connecting bolts or screws Z and then replacing them when the pieces have been properly adjusted.

The upright pieces of the cage L' are secured at their lower ends to a rod m, located on the bottom of the platform M, which platform may be made of two pieces, as shown in Fig. 5 of the drawings, or of one piece, as illustrated in Fig. 2. To the lower surface of the platform are secured a number of straps n, to which are fastened thelower ends of the rods or bars n of the cage, the other ends of which are secured to the uprights, as is clearly shown in Figs. 1 and 2 of the drawings. The platform M is also provided with other straps or pieces n2, having eyes or openings in their adjacent ends through which is passed the rod m, thus hinging the two pieces of the platform together, as is apparent. To the upper portion L of the cage is secured plates o, provided with square openings for the reception andv retention of the rectangular-shaped shank o of the forked rests O for the hods o2, which hods are of the ordinary kind and are provided with handles o3, which rest against the brackets 04 on the transverse extensible bar L3 of the cage, against which may rest another hod whose handle o3 rests on the platform M and is held in position by means of a socket-piecem thereon. Near each end of the cross-bar a2 of the main or supporting frame is secured guide-rods a3, which extend to the foundation of the building. These rods are held in a vertical and secure position by means of spikes e, which are driven in the joists c and are formed at their free ends with semicircular hooks e2, which partially encircle the rods a3. At proper points to the bottom of the platform and to the upper piece L of the cage is secured guide-pieces d, whose free ends are made in the form of a broken ring d to encircle the guide-rods 0.3, yet will allow them to pass over the necks e3 of the spikes e', thus guiding the platform and cage of the elevator and preventing any wabbling thereof. As shown in Fig. 1 of the drawings, the chain E is passed over the smaller sprocket-wheel E2 on the driving-shaft F, and the cable I in said view is in position on the larger sheave D, while in Fig. 2 of the draw-- ings the chain E is shown on the larger sprocket-wheel E3, while the cable I is on the smaller sheave D', thus equalizing the power required to elevate the different-weighted loads. When it is desired to place the chain E from the smaller wheel E2 to the larger one E3, the pieces in which the shaft F has its bearings may be moved from the lower recesses 7L in the brackets g to the upper ones, as is shownin Fig. 2 of the drawings. It is obvious that if itis desired to extend the size of the cage it may be readily done by removing the nut-screws l in the pieces Z', L3, and L of the cage and reinserting them after the parts have been suitably adjusted. It is also apparent that by the use of my elevator Iam enabled to hoist hods and brick between the j oists, which are very close together, and when such is the case the rests o for the hods are placed in the position shown in Fig. 2, while when plenty of space is to be had the rests may be placed in the position shown in Fig. 1 of the drawings.

By reference to Figs. 3 and 4 of the drawings it will be seen and readily understood that by reason of the construction of the hub C and the piece H the balls will not be displaced by the removing of eitherof the shafts, for the reason that the collars c5 in the hub and those c, which are screwed into the recesses c and h2, respectively, will prevent any displacement of the balls.

It will be seen by reference to Figs. 1 and 2 of the drawings that the legs of the main frame are curved laterally or toward eachother and at the ends of the frame, thus allowing the hods to be removed from the rests on thc cage without obstruction. It will also be seen that the frame is contracted at its top, which permits of the use of a much shorter shaft B than would otherwise be required.

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

1. The combination of a main frame with a shaft located in its top, a hub provided with anti-friction balls and loosely mounted on said shaft, a sprocket-wheel and grooved sheave on the said hub, a driving shaft havingits bearings inthe sides of the main frame and crank handles at each of its ends, a sprocket-wheel mounted on the driving shaft and having a chain to connect it with the wheel on the other shaft, a cable passing over the groovcd sheave, an adjustable cage attached to each end of said cable and having adjustable rests for the hods, substantially as described.

2. The combination of the main frame A, with the recessed brackets or plates g, secured to its sides, the pieces H, having the recesses h, the balls c', therein, the rings c2, between the balls and the lugs h', to iit in the recesses h, of the brackets, the driving shaft F, having its bearings in the pieces II, and provided at each of its ends with crank handles, the sprocket-wheels E2, and E3, mounted on said shaft, the shaft B, located in the top of the main frame, the hub C, having the recesses c, and balls c', therein loosely mounted on the shaft B, the sprocket Wheel E, and grooved IOO IIO

sheaves D, and D', on said hub, the chain E', portion of the cage and having the guideuniting the sprocket wheels on the shafts B, and F, the cable I, to pass over the sheaves D, and D', and an adjustable or eXtensible cage secured to each end of the cable, al1 constructed, arranged, and operating substantially as and for the purpose set forth.

3. The combination with a hoisting or lifting mechanism having guide rods, of the adjustable and extensible cage L', consisting of the over-lapping cross-pieces L, L3, and Z', the adjustable platform M, secured to the lower pieces d, with broken rings d', to encompass the guide rods, the plates 0, secured to the top of Iche cage and having openings therein, and the forked rests O, for the hods adapted to fit in said openings, substantially as described.

JAMES ADAMS.

Witnesses:

CEAS. C. TILLMAN, E. A. DUGGAN.

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