US576089A

US576089A - Dental engine

Info

Publication number: US576089A
Authority: US
Publication date: 1897-02-02
Anticipated expiration: 1914-02-02

Description

(No Model.) v 2 SheetsShee't 1.

A: H. BUTTERFIELD.

DENTAL ENGINE.

Patented Feb. 2, 1897.

. 4/ A. 1 w I I I I mentor. 20 M Butterfeeld.

P117170- neus.

Witimese s: Q/kW-E.

2 m h S M u e e h S 2 U, L E I F R E T T U B H k uh, d 0 M 0 W DENTAL ENGINE.

1 'No. 576,089] Patehted Feb. 2,1897.

INVEN'II'OR (Lmem o H.w e 'fiel d).

ATTORNEYS.

WITNESSES:

Enron,

AMENZO II. BUTTERFIELD, OF STAMFORD, NEIV YORK.

DENTAL ENGINE.

SPECIFICATION forming part of Letters Patent No. 576,089, dated February 2, 1897.

Application filed June 17, 1895. $erial No. 553,011. (No model.)

To all whom it may concern.-

Be it known that I, AMENZO H. BUTTER- FIELD, of Stamford,in the county of Delaware, in the State of New York, have invented new and useful Improvements in Dental Engines, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

My invention relates to dental engines in which a water-wheel is used as a motor; and it consists in the several novel features of construction and operation hereinafter described, and which are specifically set forth in the claim hereunto annexed.

It is constructed as follows, reference being had to the accompanying drawings, in which Figure 1 is a sectional elevation of the wallbracket, the motor and its mounting, driveshaft, and the connections for the flexible driven shaft. Fig. 2 is an elevation of the drive-shaft detached. Fig. 3 is a perspective of the sliding sleeve connected to and driven by the drive-shaft and to which the flexible shaft is connected to be driven by its rotation. Fig. fis a longitudinal sectional elevation of the flexible shaft and its mounting.

A is a suitable shell or casing for the motor, having a boss 1 on one side and on the opposite side a removable plate 2, provided with a bearing 3 for the drive-shaft 4:, which is secured to one side of a motor-wheel 5, which is here shown as comprising an inner cylin der 6, fitting loosely through one of the heads '7 of the wheel, 8 being the opposite head to which the shaft 4 is secured, and 9 are the buckets, (shown here as of angular form,) and 10 is the water-port in said cylinder, which discharges the water into the angle of and against the buckets to rotate the wheel and drive said shaft.

Suitable perforated ears 11 are secured to a wall or other support, and in them the pivot 12 is journaled, its lower end being hollow,

' substantially as shown, and the feed-pipe 13 is connected thereto in any suitable manner to form a water-tight joint and yet permit said pivot to rotate in its bearings. The pipe 14 axially connects the bore of the pivot to the water-chamber 6 and, while conducting the water thereto, forms the principal support for the motor. A suitable brace or stay bar 15 can be used, when desired, between the motor-case and said pivot. A suitable pipe 16 conducts away the water which passes core of an ordinary flexible shaft is connected to said sleeve in the ordinary manner, as by insertion, and said sleeve is connected to said drive-shaft, substantially as shown, in order that said sleeve may reciprocate upon said shaft whenever said flexible shaft is flexed and straightened, which is an exceedingly valuable feature, especially in the work which requires very short bends in the flexible shafting, as it prevents any cramping of the core or its binding in the sheath, and thereby permits the tool driven thereby to be always operated at uniform speed and with uniform power, utilizing the maximum of the force applied and insuring longer life to the shafting. It will be seen that this principle can be applied to any style of motor.

Having described my invention, What I claim, and desire to secure by Letters Patent, is-

In a dental engine, a driving-Wheel, a rigid shaft extendingtherefrom, and provided with a groove, and a lug on its outer end, the inclosing extension 2 1 extending from the casin g for the wheel, and the chambered cap 20, combined witlrthe endwise-moving slotted sleeve 19, placed on the end of the driving-shaft, a

rigid rod connected to the sleeve, and a fieXible shaft operated by the rigid rod, substantially as set forth.

In Witness whereof I have hereunto set my hand on this 14th day of June, 1895.

AMENZO l-I. BUTTERFIELD. In presence of- E. A. Acrcnmson, G. W. KENDALL.