US1384740A - Dental instrument - Google Patents

Description

W. W. BOLLS- v DENTAL INSTRUMENT.

APPLICATION FILED NOV 4, I920.

1,384,740, Patented July 19, 192-1. I

Z6 i I guwemo'c .5 Ffilliam WBaZLs,

. h v MrNEssr- 1 I I PATENT OFFICE.

WILLIAM W. DOLLS; OF WASHINGTON, DISTRICT OF COLUMBIA.

DENTAL INSTRUMENT.

Specification of Letters Patent.

Patented J my 19', 1 921.

Application filed November 4, 1920. Serial N0. 421,667.

To all 1071077121 mag concern Be it known that I, VVILLIAM W. Bonns, a citizen of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Dental Instruments, of which the following is a specification.

This invention'relates to certain new and useful improvements in dental instruments and pertains more particularly to means under the control of the operator for feeding water to a grinding wheel or other tool so as to prevent overheating.

The primary object of the lnventlon' is to provide a device for maintaining the wheel or tool moist, and which can be operated by the dentist without appreciable movement of the fingers of the hand in which latter the instrument is held.

A further object of t'he'invent'ionisto pro-- vide a moistening device which is adjustablev so that the water may be fed to the wheel'at any point desired'between the center of rotation and the-peripherythereof;

A still further object of the invention is to provide a water feeding device which is retained at fixed points on the handle of the instrument regardless'of the movement or position of the distributing end of the device, z' 0., whether the distributing end be disposed closeto or remote from the axis of rotation of the grinding wheel.

The invention further aims to provide a device of this character which has novel meansforapplying the water to the device so that a sterile condition is maintained;

In addition the invention aims toprovide a device of this type which isboth simple and economical and which canbe easily ap pliedto and-removed from the handle at will.

In the drawings 1- Figure 1, is a side elevation of the preferred form of the invention;

Fig. 2, is a top plan view;

Fig. 3, is a section on line 3-3 of F 1g. 1;

Fig. 4:, is a side elevation of a modified form of the invention, and

Fig. 5, is a section on line 5-5 of Fig. 4.

In proceeding in accordance with the present invention, a spring clamp or clip 1,1s employed which engages about the handle H of the dental instrument, the clip being formed with ears 2 between which is pivoted a tube or hollow rod 3, by means of a pin 4. A second pair of ears 5 are borne by the Cllp 1 engage about an attenuated or reduced neck 6 of abulb 7', the neck- Gbein'g secured to the inner end of th'e tube 3. The'ear's 5 are designed to hold the bulb substantially against movementor in fixed relation to the handle H, while still permitting the free outer'end o fthe tub'eto move about the pin 4;. A pair of spring arms 8'are connected at their inner ends to a sleeve 9 which is received over the tube 3 and have'aring 10 arranged thereover so that a piece of sponge or equivalent absorbent material 11 may be removably gripped between the arms.

From the foregoing it will be seen that the dentist may easily and quickly place a piece of sponge or absorbent material in the spring clamp arms and'upon filling thebulb 7 with water, may by very slight pressure on the bulb, force water as desired, through the tube and into the sponge. Further, the dentist may, by sliding clip 1, bring the sponge up to the back face of the wheel as close as may be desired, and by moving the tube 3 about pivot .pin 4, may cause the sponge'to;

illustrated'in Figs. 4 and 5 the tube 20 has a wick 21 housed therein with the free outer end'of the wick projecting outwardly of the forward end of the tube so as to impinge against the rear face'of the wheel. The tube 20 is carried-by a U-shaped carrier or'support22 which latter movesin a horizontal plane so as to position'the' wick at any desired point between the periphery and center of the wheel. The carrier 22 is pivoted by a pin 23 to a spring clamp or clip 24- which engages about the handle of the dental instrument as depicted. The bulb 25 is formed to contain water or antiseptic as in the preferred form and by gentle squeezing with the fingers will control the quantity of the fluid supplied to the wheel. With this form of the invention, the dentist may cut oif a used end part of the wick after each use of the device so as to maintain a sterile condition, in lieu of the requirement necessary or advisable in the preferred form of substitut ing a new sponge for each patient in order to preserve sterility. In the form of the invention disclosed in Figs. 4 and 5, the bulb is held in a fixed relation to the handle the same as in the preferred form, the bulb in each instance being held above or on the top of the handle alined with the longitudinal axis thereof so that the dentist can squeeze the bulb by a slight upward movement of his fingers and without discontinuing the grinding operation.

Obviously as in Fig. 4, the wick could be eliminatedif desired and the water fed directly to the wheel in which event the dis charge end of the tube 20 would be made smaller.

Further each form of the invention affords a range of adjustment for the point of water feed extending from the center to the periphery ofthe wheel or radially thereof.

The term handle as herein used is understood to comprehend the tool holder or hand piece of a dental engine.

Obviously any form of wick may be used, for instance any fiber, such as wood, or other material susceptible to capillary attraction.

What is claimed is:

1. In a dental instrument having a handle and a grinding wheel, a support formed for attachment to the handle of the instrument, a tubular member pivoted to the support and having a discharge positioned opposite to the rear face of the wheel and radially movable from the center to the periphery of the grinding wheel, and a bulb connected to the tubular member to feed fluid thereto.

2. In a dental instrument having a handle and a grinding wheel, a support formed for attachment tothe handle of the instrument, a tubular member pivoted to the support and having a'discharge movable from the center to the periphery of the grinding wheel, a bulb connected to the tubular memher to feed fluid thereto, and means to support the bulb in a relatively fixed position on the handle so that the tubular member may be moved about its pivot while the'bulb remains in its said fixed position.

, 3. Ina dental instrument having a handle and a grinding wheel, a clip receivable over the handle, a fluid tube pivoted to and car ried by the clip so as to move radially of the wheel, and a bulb connected to the tube.

4- In a dental instrument having a handle and a grinding wheel, a clip receivable over the handle, a fluid tube pivoted to the clip so as to move radially of the wheel, a bulb having an attenuated neck connected .at one end to an end of the tube, and means carried by the clip to secure the opposite end of the neck and thereby the bulb on top of the handle, the neck being formed to allow the tube to move radially of the wheel without moving the bulb.

5. In a dental instrument having a handle and a grinding wheel, a support on the handle, a tube pivoted at one end to the support, a bulb superimposed on the handle and having a reduced neck connected at its outer end to the inner end of the tube, and ears borne by'the support'and clamped about the inner end of the neck to hold said neck end and the bulb in fixed position on the handle,

said neck being formed to allow the tube to move about its pivot while the bulb remains fixed. I

6. In a dental instrument having a handle and a tool, a fluid tube to feed fluid to the tool, a bulb connected to the tube, means to removably secure the tube to the handle, a sleeve received over the tube, and absorbent material gripping arms carried by the sleeve and arranged on opposite sides of the tube. 7. In a dental instrument having a handle and a tool, a clip receivable over the handle, a tube, a bulb connected to the inner end of the tube, a member engaged about the tube so as to support the latter and arranged over the clip, and means to nect the member-to the clip.

8. In a dental instrument having a handle and a tool, a support on the handle, a tube pivoted to the support, a bulb on the handle, an elongated neck ontthe bulb connected at its outer end to the tube and means to secure the inner end of the neck and thereby the pivotally con-- I bulb in fixed position on the handle and in spaced relation to the pivot of the tube to allow the tube to. move about its'pivot without affecting the fixed position of the bulb.

In testimony whereof I :afiix my signature.

WILLIAM W. BOLLS.

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