US723135A - Sleeve for flexible shafting. - Google Patents

Description

PATBNTED MAR. 17, 1903.

APPLICATION FILED JUNE 1 1, 1902.

.ws-Noms Param ce, Pnnfhuwn, msmnajron. u. lc.

A. w. EEOWNE. SLEEVE EOE FLEXIBLE SEAETING.

L @NEN on an enlarged scale, showing the inner end UNITED i STATES? ATENT FFICE.

ARTHUR W. BROWNE, OF PRINCEBAY, NEW YORK, ASSIGNOR TO THE S. S. WHITE DENTAL MANUFACTURING COMPANY, OF PHILADELPHIA, PENN- d SYLVANIA.

SLEEVE FOR FLEXIBLE SHAFTING.

SPECIFICATION' forming part 0f Letters Patent No. 723,135, dated March 17, 1903.

Application filed-Tune 11, 1902. Serial No. 111.092. (No model.)

T0 a/ZZ whom it `may concern: f

Be it known thatI, ARTHURW. BROWNE, a citizen of the United States,res'i ding at Princebay, in the county of Richmond and State of New York, have invented-certain' new and useful Improvements in Sleeves for Flexible Shafts; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertainsto make and use the same. gf

My invention relates to certain improvements in sleeves or sheathsffor liexible shafts, particularly designed for dental engines. n

The principal object of myinvention is to strengthen or reinforce such sleeves at and near their inner fixed ends for the purpose of preventing the sleeves and shafts frombecoming permanently bent or set, whichv is liable to occur unless some means are ein,

ployed to overcome it. i

In the accompanying drawing@1 which indicate a single exempliiication of my invention, Figure 1 is an exterior view on a scale smaller than the actual size. Fig. 2 is a similar view ofthe sleeve and its end connection, the outer or free end of the sleeve being omitted. Fig. 3 is a longitudinal central sectional view of the parts shown in Fig. 2, theflexible shaft or cable not being shown.

The best form of sleeve `for dental-engine exible shafts now made may be 'described as follows: The inner member of the sleeve (indicated at A) consists of a flexible coiled Wire tube extending the entire length of the sleeve and in whiclrthe flexibleshxaft or caextremities of the sleeve areprovided withu end pieces or ferrules having threaded con` nection with the sleeve, the end piece D at ble is adaptlierote. Closely surrounding said inner member A is a textile covering;

B, preferably woven thereon and technically called the ,weavingfJ rounded by a textile covering C, constituting the outer member of the sleeve, which is pref-` eralolybraided upon the weaving and technically called the braiding AThe opposite sleeve and arranged exteriorlythereof.

vnumerous devices have been employed for preventing the too-abrupt curving of the shaft and sleeve; but so far as I am aware these have all been independent adjuncts of the Itis the object of my invention to strengthen the sleeve at this point by means of a reinforce constituting a component part of the sleeve and preferably arranged interiorly thereof. This may be accomplished by increasing the external diameter of the sleeve at and near its inner end without increasing the internal diameter, the reinforce thus formed extending a suitable distance toward the opposite end of the sleeve-say about one-fifth the length of the sleeve, more or less-and by preference gradually decreasing in diameter.

Obviously the reinforce contemplated by my invention maybe eected in various ways; but I deem it necessary to illustrate and describe but the single construction shown in the drawings. This consists of a series of tubes G, H, and I of dierent lengths introduced between the ,inner and outer members of the sleeve, these tubes, in this instance, being of textile material. The tube G is woven directly upon and around the weaving B and extends from the inner extremity of said weaving to a point indicated at g. The tube H is woven directly upon and around the tube G as far as said tube extends and is then woven directly upon and around the weaving B and extends to the point marked h. The tube I is woven directly upon and around the tube H and also upon the Weaving B andv extends to the point i. The outer covering C is braided directly around the tube I and is thence continued to the opposite end of the sleeve in direct contact with the Weaving B.

A sleeve provided with a reinforce such as l have just described is practically rigid for a short distance from its in ner end and becomes flexible beyond this point, the fiexibilitygraduallyincreasing until the reinforce tapers off to the diameter of the sleeve proper. In this Way the flexure of the sleeve When hanging loose is not so abrupt as in a sleeve not provided with the reinforce, the tendency of the curve or bend of the sleeve and shaft becoming set thus being overcome. The reinforce being incorporated With the sleeve andl also being, as I now prefer to construct it, inside the outer covering thereof, I have produced a. sleeve which is not only strong and durable and sightly in appearance, .but one which obviates a common fault in'the present style of sleeve and at the same time dispenses with the use of all' independent and external supports/ff Instead of rigidly connecting the sleeve to the engine-head by way of its inner end piece E, as usual, I have employed a swiveling connection, whereby the sleeve may be turned when desired. Any suit-able swiveling connection may be used; but that shown in the drawings consists of a simple swivel connection e between the sections E and E' of the metal tube which connects the sleeve to lthe engine.

I am aware that a tapered flexible drivingshaft and a correspondingly-tapered sleeve or sheath are old; but I do not broadly claim a tapered sleeve the external and internal surfaces of which are parallel longitudinally.

I claim as my invention-- l. A sleeve for fiexible shafts provided with a reinforce at and near its inner end, said reinforce being a component part of said sleeve, as and for the purpose set forth.

2. A sleeve for flexible shafts provided with a reinforce at and near its inner end, said reinforce being a component part of said sleeve and tapering toward the outer end thereof, as and for the purpose set forth.

3. A sleeve for flexible shafts provided at and near its inner end with a tapered reinforce Which is located between the inner and outer members of said sleeve, as and for the purpose set forth.

4. Asleeve for flexible shafts, which at and near its inner end is of increased external disurrounding said covering at and near the inner end of the sleeve, and an outer member surrounding said tubes and said covering, substantially as and for the purpose set forth.

In testimony whereof I aflix my signature in presence of tWo Witnesses.

ARTHUR W. BROWNE.

Witnesses:

R. W. W'ooD, A. F. DECKER.

Images