US766172A - Band-brake. - Google Patents

Description

PATENTED AUG. 2, 1904.

W. N. DUFFORD.

BAND BRAKE.

APPLIGMIoN FILED 00T. 23. 1903.

H0 MODEL.

Patented August 2, 1904.

PATENT OEEICE.

VILLIAM NELSON DUFFORD, OF FINDLAY, OHIO.

BAND-BRAKE.

SPECIFICATION forming part of Letters Patent No. 766,172, dated August 2, 1904.

Application filed October 23, 1903. Serial No. 178,276. (No model.)

To all whom it vit/'ty concern:

Beit known that I, VILLIAM NELSON DUF- Foni), a citizen of the United States, residing at Findlay, in the county of Hancock and State of Ohio, have invented a new and useful Band- Brake, of which the following is a specification.

My invention i'elates to band-brakes such as ai'e used in connection with well-drilling machines and shown and described, but not claimed, in Letters Patent No. 735,222, granted to me August 4, 1903, and has for its objects to provide a device of this cliaractei' in which the brake-band may without injury be reduced to compact foi'in for transportation in moving the machine fi'om place to place and in setting' up or taking down the machine be readily eng'aged with or disengag'ed fi'oni the operating-lever- To these ends the invention comprises the novel details of construction and combination of parts more fully hereinafter described.

YIn the accompanying' drawings, Figui'e 1 is a side elevation illustrating my improved brake applied for use. Fig'. 2 is a detail section on an enlarged scale. Fig. 3 is adetail perspectivc view. Fig. 4 is a detail section on the line 4 4 of Fig. 2. Fig. 5 is a detail pei'spective view.

Referring to the drawings, 1 indicates a winding-di'um, 2 a brake-wheel fixed thereon,

and 3 the bi'ake-band surrounding the wheel.

and having' one end stapled or otherwise fixed to a stationary member 4 and the other connected with the crank-arm 5 of an opei'atinglever 6. These parts, with the exception of the brake-band, may be of' the construction illustrated in my prior patent oi' of other prefei'i'ed construction and arrangement, inasmuch as they constitute no part of the pi'esent invention.

The band 3 is in accordance with my invention composed of a plurality of sections 7, 8, and 9, arranged end to end and having their meeting' ends i'ight-angularlybent to produce outwardly-projecting abutting flanges 10, cai'- ried one upon the end of each of the sections and adapted to meet in pairs.

11 indicates a series of fillingblocks or plates disposed one upon the outer face of each liange 10 and each pair of blocks being' designed to receive between them a pair of the meeting flanges 10, the outer ends of which latter are angularly bent or turned downward upon the outer edges of the blocks, thus providing, in effect, recesses in which the latter ai'e seated. The ends of the blocks oi' clamjiiiig members 11 project beyond the transverse edges of the flanges 10 and are perforated for the reception of clamping-bolts 12, which extend through the blocks 11 at points beyond the flanges and ai'e operable foi' drawing the blocks or members together to tightlyclanip the flanges between them, thus formingbetween the bandsections a firm rigid connection which will not yield under longitudinal stress upon the band, whereby a sectional band is produced which in practice will be as effective as the usual continuous or one-piece band. lt may here be remarked that the one-piece brakebands, such as are now in use and which ai'e composed of metal and of great length, are objectionable for the reason that when folded for ti'ansportation they readily bend or kink, causing surface defects and irregularities which it is practically impossible to remove and which when once foi'nied seriouslyimpair the band.

By my invention is produced a band which may be readily disjointed and packed for transpoi'tation and by which the above-mentioned objections ai'e in a great measure overcome, if not wholly obviated.

In oi'dei' to facilitate connection and disconnection of the ends of the band with the operating-lever' 6 and fastening-staple 4 while setting up or taking down the machine, and thus also permitting ready disengagement of the pai'ts for transportation, I fold or bend the ends of the band back upon its body portion, as at 13 in Figs. 1 and 5, thus producing a space or socket 14 of a width equal to the diameter of the member which it is to engage-such, for instance, as the crank-arm 5 of the lever-and seat within said socket a i'etaining' block or element 15, removably seciu'ed in place by bolts or the equivalent 16. The outer end wall of the socket 14 is cui'ved to conform to the curvature of the inembei' 5, as is also the wearing-face 1'7 of the block which lies in contact with the member. Thus the block and wall of the socket conjointly form a circular journal-opening for receiving the member. It is apparent that in practice the bolts 16 may be readily withdrawn and the block removed, thereby permitting engagement or disengagement of the band with the member and the band and lever being olisconnected for separate transportation.

From the Jforegoing it will be seen that I produce a device of simple construction which will be eflicient in operation and one which is admirably adapted for the attainment of the ends in view. It is to be understood, however, that I do not limit myself to the precise details herein set forth, inasmuch as minor changes may be made therein without departing from the spirit or scope of -the invention.

Having thus described my invention, what I claim isl. A brake-band comprising a plurality of sections having outturned meeting flanges, clamping-plates arranged in pairs to receive the anges between them, said plates being extended and perforated at points beyond the transverse edges of the anges and the latter being of a uniform width relative to the adja cent portion of the band, and clamping-bolts extended through the perforations.

2. A brake-band comprising a plurality of sections having youtturned meeting flanges, clamping-plates arranged in pairs to receive the flanges between them, the outer ends of the flanges being turned down permanently upon the adjacent edges of thel plates, and means for connecting the plates.

3. A brake-band comprising a plurality of sections having outturned meeting flanges, clamping-plates arranged in pairs to receive the flanges between them, the outer ends of the flanges being turned down permanently upon the adjacent edges of the plates and the latter extended and perforated beyond the transverse edges of the flanges, and clampingbolts extended through the perforations.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in the presence of two Witnesses.

WILLIAM NELSON DUFFORI).

Witnesses:

J. M. PLATT,' y EDWARD DAvIs.

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