US320024A

US320024A - Hoisting-drum

Info

Publication number: US320024A
Authority: US
Publication date: 1885-06-16
Anticipated expiration: 1902-06-16

Description

(No Model.) v 2 Sheets-Sheet l. P. L. WEIMER.

HOISTING DRUM. No. 320,024.

Patented June 16, 1885.

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HOISTING DRUM.

No. 320,024. Patented June 16, 1885.

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ATTORNEYS UNITED STATES ATENT .FFCQ

PETER L. WEIMER, OF LEBANON, PENNSYLVANIA.

HOIS'TING-DRUM.

SPECIFICATIGN forming part of Letters Patent 110.320,024, dated June 16, 1885.

Application filed Mav 12, 1885.

To all whom it may concern:

Be it known that I, PETER L. WEIMER, a citizen of the United States, residing at Lebanon, in the county of Lebanon and State of Pennsylvania, have invented certain new and useful Improvements in Hoisting-Drums for Elevators; and I do hereby declare the following to be a full, clear, and exact description otthe invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object the construction of a frictional mechanism for hoistingdrums, whereby economy in construction, facilityofrepairs,andeaseandsafety ofmanipulation are secured through the medium of a single operating lever, and which is adapted for hoisting or lowering, all of which is accomplished by the peculiar construction and combination of the parts, which will hereinafter more fully and at large appear.

In the accompanying drawings, which form part of this specification, Figure 1 is a vertical longitudinal section of the drum and its frictional mechanism. Fig. 2 is a transverse section of the same at dotted line yy of Fig. l. Fig. 3 is a top view of the shaft upon which the drum and the master-wheel are mounted. Figs. 4 and 5 are detail views showing one of the friction-disks.

Reference being had to the drawings, similar letters indicate corresponding parts.

A represents the shaft mounted in bearings B, upon which the master-wheel C is fixed and drum B revolves. The shaft A is enlarged at E and has a rectangular opening, F, formed in said enlargement. vBearing G of the shaft A is provided with ascrew-flange, H, screwed on the end of the shaft, as clearly shown in Figs. l and 3. The journal-box B is provided with a chamber, J, for the reception of the flange K on the hub L ofthe master-wheel C, and also for the reception of friction-disks M, which have a rabbet formed in their periphery for forming chambers to hold a lubricant, and an aperture, as indicated at N, Figs. et and 5, for the purpose of distributing the lubricant over the bearing-surface of the disks M and the flange K of the hub L of the master-wheel C. The shaft A is provided with a shoulder, a, which bears against one of the friction-disks M and imparts the thrust of the shaft to the (No model.)

disks. The shaft is also provided with a central bore communicating with the opening F in the enlargement E, inwhich bore is placed a rod, O. On the inner end of the rod O is pivoted a short link, P, to which are pivoted links or toggle-levers Q, the outer' end of one of which is pivoted to projection R on the master-wheel C, and the outer end of the other link is pivoted to one end of the bell-crank S,

which is pivoted at T to the master-wheel, as

shown in Figs. l and 2. To the outer arm of the bellcrank S is attached an adjustable screw, to which is secured one end of a friction-band, V, the inner side of which is provided with a Wooden lining lforming a-brakeshoe, W. The other end of the band V is secured to a projection, X, on the master-wheel C, as shown in Fig. 2, said band and shoe surrounding the flange or frictionbearing A of the drum B, as clearly shown in Fig. 1. On the outer end of the shaft A is a disk or follower, G, held on said shaft by means of screwnut D', and friction-disks E-such as shown in Figs. 4i and 5-are arranged within a cap-box, F, to which box is attached at G a lever, H', the fulcrum of which is the pivoted arm I.

From the foregoing description the skillful mechanic will readily understand the construction of the several parts and the relation that they bear to each other. Therefore I will proceed to describe the operation, which is as follows:

The operator, by drawing on the lever H outwardly in the direction indicated by the arrow bin Fig. l, will force the rod O toward the drum B, which will cause the toggle-` face from the embrace of the band V and its A VI OO the shaft A, and its speed of revolution on the shaft may be controlled at the will of the operator by the degree of contraction applied to the friction-band.

Having thus fully described my invention,

1. The combination of a hoisting-drum provided with a frictional surface, a continuons friction brake -band surrounding the drum, and having one end fixed to a disk or masterwheel and the other end movably secured to one end of a bell-crank lever, with a single lever and intermediate mechanism for locking the drum and the shaft for hoisting and controlling the speed of the revolving drum for lowering, substantially as'described.

2. Thecombination of the hoisting-drum, the friction brake-band surrounding a portion of the drum, a disk adjacent to the drum to which One end of the brake-band is fixed and the opposite end movably secured to a bellcrank carried by said disk, the toggle-levers Within the drum, and a lever and rod for contracting and expanding 'the brake-band, substantially as described. l

3. The combination of the shaft, the cham- Y bered journal-box, the flange on the disk or 4. The combination of the shaft, and the fricing the frictionldisks, the follower,'and the nut to hold the follower in position, substantially as described. l

8. The combination of the hoisting-drum,

the master-wheel, the shaft, the friction-disks 5o on the shaft, and suitable bearings therefor, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

PETER L. WEIMER.

Vitnesses:

W, MORRIS WEIDMAN, JOHN A. WEIMER.