US1906350A - Valve grinder - Google Patents

Description

A. WERNER VALVE GRINDER May 2, 1933.

Filed April 9, 1952 Patented May 2, 1933 i UNITED stares ADOLPH.WERNER, OF MILWAUKEE, WISCONSIN VALVE GRINDER Application filed April 9, 1932. 'SerialNo. 604,320.

My invention refers to valvegrinders, and has for its object to provide a simple, durable valve grinder, embodying a journalled v stem having an abrasive head, the device heing readily inserted into the housing, centered and secured with relation to the valve seat, to thus insure true and uniform grinding of said valve seat throughout its circumference. A specific object of my inventionis to provide a conical cap having a journal therein for a rotary stem, carrying an abrasivehead, together with some means associated with the cap for securing the same to the valve seat housing, and for alining it with said valve seat.

Another object is to provide a conical journal cap and associated parts, with means for centering the same with relation to a valve seat, the conical cap being. adapted to fit various sized valve housings.

Another object of my invention is to provide a cushioned abrasive head unit which can be renewed, and which also is capable of '25 interchangeability for various sized valve seats.

WVith the above and other minor objects in view, the invention consists in certain peculiarities of construction and combination of parts, as will be hereinafter set forth with reference to the accompanying drawing and subsequently claimed.

In the drawing Figure 1 represents a fragmentary sectional elevation of a valve grinding mechanism embodying the features of my invention, the same being shown adjusted to a valve housing of any standard type.

Figure 2 is an inverted plan view of the valve grinder head and conical journal cap associated therewith.

Figure 3 is a detailed plan view illustrating one means of adjustably clamping the grinder to the dome portion of a valve housing.

Figure 4; illustrates a detailed partly sectional elevation of a grinder head, wherein an abrasive pad is attached by a binding screw.

Figure 5 is a plan View illustrating the abrasive head, and i I Figure 6 is a detailed sectional, elevation of still another form of abrasive head, wherein a rubber disc or cushion is employed in connection with a disc of abrasive material.

Referring-by characters to the drawing, A represents a standard valve or faucet housing, provided with the usual discharge nozzle B and an intake neck C, said housing also being provided with the usual openmouthed dome E, which isscrew-threaded for the reception of a gland and its associated valve parts, the same, in this instance, being removed for the reception of a stepped, '5? conical cap 1, which cap is bored to form a journal 2 for a grinding spindle 3.

The grindingspindle 3 is provided with a handle 4 in this exemplification of my invention, but it is understood that this handle may be dispensed with and the end of the spindle provided with polygonal sides for the reception of a hand bit,-or other means, for rotating the spindle. I Theconical; stepped cap is provided with slotted wings 5 for the reception of clamping screws 6, which pass therethrough, and receive knurled binding nuts 7. .The-lower ends of the clamping screws 6 are pivotally-monnted upon hand screws 8, as best shown in Figure. 3, the hand screws, together with binding nuts 9, engaging cars 10 of companion pairs of, clips 11'11, which clips encompass :the bottom portion of the valve housing, as best shown in Figure 1., 1 v

Thus it will be seenthat the valve grinding mechanism can readily be adjusted to the valve housing by first firmly gripping the clips, 11 about its dome, and thereafter the spindles 3, together with its grinding'head 12', are inserted in the open threaded mouth of the dome, as shown. Thehead is then positively centered or alined with the housing valve seat F, due to thefact that one of itsstepped surfaces will seat and shoulder within the domeopening to insure alinement of the parts. The clamping-screws are then swung into position, as shown in Figurel, causing their upper ends to enterthe-slots of the wings in said cap, and thereafter the binding screws 77 are turned down to rigidly secure the parts to the valve housing, it being understood that the spindle 3 is then in perfect alinement with said housing.

As shown in Figures 1 and 2 of the drawing, the head 12 is provided with rightangle kerfs or radial slots 1313, the slots 13 being of a finer grade, whereby an abrasive paper pad of relatively fine material may be fitted therein, or, in the event that coarser material is required, the ends of the abrasive strip or pad are fitted into the slots 13. As best shown, for example, in Figure 1 of the drawing, the abrasive material 1 1 is folded upon itself to form a double grinding pad that approximates the diameter of the head, and the ends 15 of said abrasive material are then inserted into the slot 13. This abrasive pad can then be secured by a binding screw 16, or, in some instances, it may be secured, as shown in Figure 1 of the drawing, by a binding cord 17, which enters a slot 18 formed in the head and thus securely confines the ends 15 of the abrasive strip. This form of vpad is particularly desirable, due to its interchangeability, whereby coarse or line sandpaper, or the like, may be utilized for grinding. It is understood, however, that any type of abrasive material may be used, as, for example, in Figure '5 of the drawing 1 have shown the head 12 centrally bored and threaded for the; reception of a screw 19, which screw confines a yielding cushion disc 20, which may be of rubber, or other suitable material, and fitted over this disc, and also confined by the screw, is a thin abrasive strip 21 formed from sand paper or emery cloth.

It will benoted that the conical cap 1 may be provided with three or more slots, five in some instances, whereby the bolts or screws 6 may be radially adjusted in these slots 7 to contact with the exterior wall of the dome E, whereby the cap 1 is not only centered interiorly but exteriorly with relation to the valve casing.

It is also obvious that I may in some cases use an ordinary abrasive-grinding disc in place of the abrasive pads previously described, but it is understood that the most advantageous efiects are produced, wherein a yielding or cushioned abrasive unit is employed.

From the foregoing description, it is obvious that it does not require a skilled mechanic to face or regrind valve discs with my apparatus, as it can be quickly inserted and centered in any valve housing and rotated to produce the desired grinding of a worn or pitted valve seat. In practice the apparatus is provided with a plurality of heads of different diameters to conform to the various dimensions of faucets or valves of standard types.

Particular attention is directed to the fact that the spindle is fixedly journalled in the conical cap so as to facilitate alinement and perfect grinding of the seat.

I claim A valve seat grinder for water faucets comprising a pair of opposed clamping jaws terminating in parallel ears, said jaws being adapted to engage the opposite sides of a valve housing, binding screws extending through said parallel ears for drawing the jaws toward one another, clamping bolts rockably mounted on the screws between said parallel ears and movable at right angles to said ears or parallel therewith, a guide head having an-exteriorly stepped face arranged above the clamping jaws, diametrically opposed pairs of ears formed on said head and arranged above the parallel ears for the reception of said bolts, when the same are disposed at right angles to the parallel ears, a stem slidably and rotatably mounted in said guide head, a grinder head upon one end of the same, and a manipulating handle upon the other end of said stem. a 1

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of Wisconsin.

ADOLPH WERNER.

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