US305877A - alsdoef - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

W. o. ALSDORP.

-MBGBANIGAL'GARING PoR AH01'STINGDEVICES, tw. No. 305,877.. f Patented Sept. 30, 1884.

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(No Model.) 2 Sheets-Sheet 2,'

W. C. ALSDORF.

MECHANICAL GEA'EINC ECE HCISTINC DEVICES, am. Y No. 305,877. Patented Sept. 30, 1884A.

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WILLinM c. Ansporn?, on Sr. LOUIS, MISSOURI.

MECHANICAL GEARING FR HOISTING DEVICES, 80G.

SPECIFICATION forming part of Letters P atent No. 305,877, dated September 30, 1884. Application filed January 3, 16E-l. (No model.)

lb all whom 4it may concern.-

Be it known that I, VILLIAM C'. ALsDoRF, a citizen of the United States, residing at St. Louis, in the eountyot' St. Louis and State of Missouri, have invented certain new and useful Improvements in, Mechanical Gearing for Hoisiing Devices, Ste.; and l do declare the following to he a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to Ina-ke andA use the saine, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specilication.

Figure l of the drawings is a side view. Fig. 2 is a plan view. Fig. 3 is a detail View. Fig. 4 is a detail view, and Fig. 5 is a sectional detail view ofthe shaft l and its clutchmechanisin.

This invention has relation to mechanical gearing for elevators and hoisting apparatus; and it consists in the construction and novel arrangementof devices, as hereinafter set forth, and pointed out inthe appended claims.

ln the accompanying drawings I have illustrated Iny invention in its application to a beltgeared elevator.

The letter Z indicates the driving-belt, moving continuously in the same direction.

Upon the shaft A is secured the fast pulley' B. C is a loose-geared pulley on `said shaft, having a pinion, a, and Dis an idler-pulley between the pulleys B and C. The belt Z is designed to be shifted onlhese pulleys. Orr the shaft A is rigidly secured the pinion b.

On a-parallel shaft, E, is keyed the spurwheel F, which engagesV the pinion b, and a spur-wheel, G, which is designed to engage a spur-wheel, H, which is loose on a third shaft, l. The shaft E, acting through the gear F or G and the gearing J JQ turns the shaft L, which carries the large drum on which the cable is wound. By means of a belt-shifting lever, c, pivoted on a fulcrum-bearing, fr, operated by a moving nut, d, on a threaded part of a shaft, M, carrying a spur-wheel, N, the

belt Z maybe shifted. When the belt is shifted from the fast pulley B to the loose-geared pnlley C, the direction of revolution of the shaft A remains unchanged; but as the pulley C is turned it is apparent that by the engagement of its pinion a. with the loose spur-wheel H, in

gear with the driving spur-wheel G of theV shaft E, the motion of the shaft E and its gearing is reversed. ruiming the cableA in the opposite direction. abled by simply shifting the belt to reverse -the gearing and the movement of the cable.

VOn the brake-shaft M is keyed fast an eccentric, P, engaging the arm e of the brake R, which is provided with springs S. Thearm e of this brake works in a box, g, whereby it is prevented from revolving. When the checkline V is pulled, turning the shaft M, the eccentric is turned, putting on the brake, and at the same time the shifter is operated to move the belt over upon the idler-pulley; or, when the `belt is on the loose geared pulley and the shifter is moved to throw the belt over on the idler. the springs of the brake will give, allowing the eccentrictorevolve one-half turn more.

T representsa pulley which is equal in width to the three pulleys B, C. and D,and isjournaled toa lever-arm, h, pivotedl at la and provided with a bearing, d. The pulley T is designed to lie upon the running belt, revolving with the motion thereof'. Il' the belt should break, the pulley T will fall, and its arm will, by its end bearing, Z, intersect the counter-shaft I, and at thesarne time will move the loose clutchcollar Z to engage the tight clutch-collar m, which operates the cog-wheel N, and thereby turns the cog-wheel p and the brake shalt to which the cog-wheel p is keyed, throwing the belt and put-ting on the brake at the same time.

W indicates a pulley on the lever s', which In this manner I am enis continuously held up by the strain of the while descending, causing the cable to becomel slack, the machinery will be instantly stopped ,by the fall of the pulley Vand its lever,which, l intersecting the shaft I, causes the loose clutchcolla-r t to engage the clutch-collar n, turning the wheels n and p and automatically putting on the -bralre and shifting the belt, as before described.

In order to operate the shifter and brake automatically when the elevator-platform is at its highest or' lowest point, the shaft E is threaded on each side ol' a chain-wheel, U, as indicated at a n, to engage the loose clutchcollars is moved upto engage the clutch-col lar on the same side of the chain-wheel, turning the latter and operating the chain J ,which turns the chain-wheel U on the brake-shaft M, throwing the shifter and operating the brake.

Having described this invention, what I claim, and desire to secure by Letters Patent,

l. The pulley T, as wide as the belt-pulleys B, C, and D, and having a lever-arm adapted to operate a loose clutch-collar on a countershaft,'in combination with a tight clutch-collar and a spur-wheel engaging a spur-wheel on the brake-shaft, and adapted to turn the latter, substantially as specified.

2. The pulley WV, held up by the strain of the cable, and having a lever-arm adapted to y operate a loose clutch-'collar on a; countershaft, in combination with a tight clutch-collar and a spur-wheel engaging a spur-wheel on the brake-shaft, substantially as specified.

3. The-reversing-shaft E, having threaded portions and traveling collars thereon, in combination with a chainwhee1 loose thereon and having lateral clutch-collars, a.chainconnec tion, and a chain-wheel on the brake-shaft, substantially as speciiied.

4. A brakeshaft having an eccentric, in combination witha brake having springs, and an arm working in a bearing to prevent rotation, substantially as specied.

5. The combination,with the brake-shaft, of an eccentric brake, and a belt-shifter adapted to operate in connection with pulleys B, C, and D, and a belt running continuously in the same direction, substantially as specified.

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

WILLIAM C. ALSDORF.

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