USRE9289E - Joseph - Google Patents

Description

J. s. MUNDY. Friction Drum.

No. 9,289. Reissued July 13, 1880.

lib Masses l- Josnrn s. MUNDY,0F NEWARK, NEW'JERSEY.

FRICTION-DRU M.

srsomcsrron forming part of Beiuued Letters Patent No. 9,289, dated July 13, 1880.

origlnalll'o. 158,967, dated January 19, 1875. Application for reissue filed April 15, 1580..

To all whom it may concern: I

Be it known that I, JOSEPH S. MUNDY, of Newark, in the county of Essex and State of. New Jersey, have invented a new and useful Improvement in Friction-Drums, of which the following is a specification.

This invention relates to new and useful improvements in friction-drums for pile-driv-, ers'and hoisting-machines; and the invention ro consists in making the friction-surface of the drum of pieces of wood confined endwise in a shell formed on theinner side of the gearwheel, such pieces of'wood being dovetailed in and turned atan angle of thirtytoforty' degrees to flt within a conically-recesseddisk on the drum. i

The invention'also consists in the details of "construction herelnalter specified.

In the u'cbet'npm'ing" drawings, Figure 1 :0 represents a sectional elevation of the machine. Fig. 2,1: a vertical section of the same, taken on the plane of linesw a: and y y, Fig. 1.

. .-Similar letters of reference'indicate correspending parts in both figures. Y

A is the drum, around which the hoistingrope B is wound when the drum 7 is revolved.

.0 is the drivingshaft, which communicates the powerlo the outer cone, D, by means of the gear-wheel E and the pinion F.

I G is the drum-shaft, which is supportedon the frame H by the two standards I J. Steam or other motive power is applied to the crankpin K of the wheel L. g a.

- M is a fly-wh'cel, on which a belt may be used for driving a pump, or for other purposes.

' The friction-surface N of'the outer cone, D,

' is composed of pieces of wood confined cnd "wise in a shell formed on the inner side of the wheel E. This wood is dovetailed in and 4c is turned ofl'iat'an an grees, to fitaconically-mcessed disk, 0. which is made fast on theend of the drum The outer cone, D, therefore presents a surface oomposed of the ends of pieces of wood as a fric' tional surface. As the drum is moved up to it friction is produced to revolve the drum, and when the drum ral spring (I; it revolve is thrown back by the spis freely around the drum-shaft gIe ol thirty to fortyde- 5o To govern the engagement and disengagement of the friction-surfaces I provide a screw, Q, which works through the bracket-nut R, and is operated by means of the hand-w heel V.

S is a pin in the end of the drum-shaft, which is given a longitudinal motion from the screw.

T is a gib, which passes through a. slot in the shaft G, and incloses a loose collar, U, which collar is forced against the end of the drum by the action of the screw and pin, the slot through the shaft being snfiiciently long to allow the gib 'l to move back and forth.

Thus the drum can be moved up to the cone D until the disk 0 engages with it by means of the hand-wheel V operating the screw Q, pin 8, gib T, and collar U, and when .thehand-wheel is turned in the opposite direction the spring P repels the drum until the frictional'snri'wes disengage.

Instead of the hand-wheel V, a lever-wheel 1o or any suitable devices may be used for the same purpose. By means of this mechanism the drum is made'to take more or less friction, as may be 'reqnired.-, The attendant stands at the hand-wheel V and controls the drum with perfect precision, making it hoist or let go or bev regulated in any manner he may desire.

I am aware thata tubular friction -drum sliding loosely on a shaft and connecting with a fast spur-wheel is old.

, Having thus described my invention, I

claim as new and desire to secure by Letters Patent- 1. A friction-drum, in combination with a friction-surface made .of pieces of wood confined'endwise in a shell formed on the inner siid; of the gear-wheel, substantially as speci- 2. K metion-drumin combination with a friction-surface made of pieces of wood confined endwise in a shell formed on the inner side of the ear-wheel, suchpieces of wood being dovetai ed in and turned at an angle of thirty to forty degrees to fit the-inner cone, substantially as specified. I

3. The combination, with a tubular and sliding drum, of an outer cone having its friction-surface mposed of pieces of wood confined endwise m a shell formed on the inner .mo

9 i oasr side, 0! the gear-whoa], such PIGCOS of wood provlded with a znde: flange supportm the being dovctmled in and turnedto fit the illcone N, as and, for the purpose describe nor cone, substantially as specified.

4. The combination of n tubular nnl slidv JOSEPH MUNDY' 5 ing drum, A, loose on a. shaft, G, and a fric- Witnesses:

Uonconc, 1), of thc'fast-(lrivon spur-whim] I), v 'ERNEST C. WEBB, havingsnring P to repel the said cone, and EDWARD ELY.

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