US2336132A - Dental tumbler supply valve part - Google Patents

Description

Dec. 7, 1943.

H. P. YslEGEl..

DENTAL TUMBLER SUPPLY VALVE PART Filed Sept. 24, 1941 INVEI?,

Patented Dec. 7, 1943 "UNITED "STATES OFFICE :DENTAL TUMBLER SUPPLY VALVE PART *Harry P. SiegelyBrooklymNfY.

Application September 24', 19.41,*Serial Nine-412,114

i l'Claim. -.('Cl'." 251.-132) This* invention .vrelates f to, fdentaliz '.tumblerzsupy .ply valve partfor usevon aidentalzcuspidorxture, and an object of the invention-` is4 to proi `vide an -improved :valve ypart ,Whichzis more 1convenientto. use; and-whichfcan be instantlyclosed or: `likewise 'opened .to .its fullicapacity. .Another A further objectlofithe inventionis .to :provide a -valve part-.structure having a double acting handlecapable -`ofibeing` `manually moved into a Xed position at which the ow through theiie-V vice will be continuous, or of being 4manually operated in one directiononly with automatic out-,olfY whenintermittent iioW is desired. An-

other object of theinven-tion isto provide a `control handle for a tumbler supply valve part' V vthat can be actuated by: a dentist without the use ofv his ngers, such asl by his Wrist, or the Y handle vof an instrument.

Heretofore. tumbler-supply. valves have been constructed to be opened andclosed by means of a threaded part turned by the ngers .of a 4 dentist or his patient, and which `'is-,operative to regulate the rate of kiiow of water to the tumbler of the iixture. v Such'fiow regulating -means vare unsatisfactory, as they aref not only .slowacting I;

with respect to fullon or oi lpositions,'but .are awkward for a patient to manipulate, and are aisopotentially unsanitary forthe dentist.

Means are `provided for effectively packing `the leakage whenin use, and Withoutinterference with. the aforesaid :capacityi adjustingmeans. .The structure illustrated is .particularlyadaptable for replacement purposeslwhere other slow operating valve parts are already inuse.

.Other features and advantages of the inven- .tionwill be hereinafter Ldescribedzand Lclaimed.

The invention will. bel more fully. understood by reference to the drawing forming a part of this specineanon.. and in which,

`handleiin closed and-open .positionsrespectivelm i following-certain adjustments `for intermittent operation of. the mechanism.

Referringfto thel drawing, and'particularly to Fig. 1,.thenumeralv lfrepresents a `dental cuspidor xturef having the customary wastevbowl II, tumbler I2, andl water supply inlet pipe. I3

.-leadingfrom. a..service line (not shown) `to a fitting-14 having. a port `I5 `(Fig.l 2) extending .from pipe -I3 through avalve Seat I6 to a cham- .,ber II..in said fitting. 4Another port I8 leads ...from.chamber I1. .to a tumbler supply pipey I9 ...extending upwardlyV within the fixture, and' ter- ...minatingirra gooseneckl directlyabove the tumbler :I 2.

-..Referring more.. particularly to Fig. 2, the nu- .,meral..2| designatesin general my improved ...valve part which is adapted to be operatively V.secured tothe tting I4.and provide more efficientmeanslfor controlling the flow of water to 24 providedin.theadjacentend-of. the tting I4. ,.Ashoulder 25 is arranged to overlie the .outer end of the tting, and a gasket 26 there- 1 between provides for a` tight joint upon tighteni ing of vthe threads.

"The other end ofthe housing 22 is provided Vwith exteriorthreads' 21 for engagement with theintern'al threads 28 of a fulcrum cap 29. Ini termediate its threaded ends, and adjacent the shoulderA 25`the` housing .22 maybe `of a lconfiguration.A suitable for the .application` .of a .valvepart of this -invention. againstgexternal L- Mthe ,joint at Ithe gasket 26.

`wrench or other .tool appropriate for. tightening The valve part .2| includes a plungerelement `P"extending* through the housing` 22 beyond either'end thereof, and consists of Aa cylindrical head' 30. and `an elongated/stem 3I. `The head A' 3i) is recessed at 32 for the snug reception there- V`in of a disk 33 made `of rubber or other suitable -elasticmateriaLwhich projects from the head 3i), and is provided wtih a flat surface 34 con- `stituting a valve vvface forengagement^with the P in respect to its proper engagement with seat I6.

The other end of spring 31 bears against shoulder 35 of head 3U, and is thus effective to urge the plunger P in a direction in which the face 34 will be pressed tightly against the seat I6. The strength of spring 31 is far greater than the pressure of the water effective over the restricted area of the port l where it passes through seat I6, so that the disk 33 when seated will not only provide a tight joint, but one in which the sealing pressure will be uniform, to minimize wear or other effects tending to mutilate or distort I the disk 33. Also the plunger being confined to reciprocal movement rather than rotational as tion of a tool to turn the nut and force the packing tightly about the stem. In this manner leak- ,age varound the stem is prevented when the plungeris in an unseated position, but 'without interfering with the functioning of the fulcrum cap 29 to be presently described. It will be noted that stem 3| also has a sliding fit through the nut 40 which adds to its desirably rigid support'and guidance in order to counteract components set up across its aXis when the handle is actuated.

A handle or lever il is provided forY operating the plunger when a supply of water is required for the tumbler. For this purpose the handle is provided with an enlarged cylindrical bifurcated end 42 within which the flattened end 3| of the stem 3l is pivoted, as at 4l'.

Normally the handle l!!A is in the position shown in full lines in Fig. 2, with the flat surface 43 of the end 42 bearing against the centiguous surface 44 on the end wall 45 of the fulcrum cap 29. When the handle is now rotated about Ythe pivot 4I into the position shown in dot and dash lines, the plunger will be moved to the right because of the leverage exerted against the fulcrum, and consequently water fram pipe i3 will then be free to ow'through port l5 into the chamber l1 from which it cannot escape except through port IB and pipe fI9 leading to the tumbler l2. And. because the handle is then in mounted by reason of its threaded connection to housing 22, it may be turned to move it toward the left from the position shown in Fig. 2 when a diminished ow of Water is desired. It will then be further away from the pivot 4l', and the handle will fall into a somewhat lowered position, with the result that when the handle is again operated to open the plunger the stroke of the latter Will be shorter, and the continuous ilow of water will also be correspondingly lessened.

Referring to Figs. 4 and 5, it will be seen that the fulcrum cap 29 has been adjusted into an extreme position, directly opposite to that shown in Fig. 2, for the purpose of operating the plunger in a manner in which the handle will not assume an over-center position, and therefore will not lock the plunger unseated, so that when released from the position shown in Fig. 5 in which the tumbler is being supplied with water, the plunger will be free to automatically cut oi the water by resuming the position shown in Fig. 4 due to the urge of spring 31.

It will thus be apparent that my improved valve part is adapted to meet the requirements stated when used on the dental xture as shown and described herein. There are doubtless other purposes for which it would be equally useful as a part of, or as embodied in an integral valve structure. Therefore I do not wish to be understood as limiting myself to the exact form of construction shown. Various modifications withouter end of said housing member, the outer'endV of said plunger protruding from said cap, a hana position in which its point of contact with the fulcrum cap is slightly over center, or beyond the aXis vof stem 3| at which point the pivot 4|' is located, the handle will remain so iXed,and

, water will ow Vcontinuously through the dedle provided with a head pivoted to said outer end of said plunger and adapted to engage said fulcrum cap to unseat said plunger, packing-means for said plunger within the outer end of the housing member and covered and concealed by the fulcrum cap, said head being fashioned to provide a surface engageable with said fulcrum cap when the latter is in an outwardly adjusted position and operative when said handle'is actuated to'unseat said plunger, and to provide another surface engageable with said fulcrum cap when the latter is in an inwardly adjusted position and operative when said handle is actuated to unseat said plunger and when said handle is released to restore the same and thereby provide Y for automatic'reseating of said plunger.

HARRY P. SIEGEL.

Images