US1296279A - Valve-tool. - Google Patents

Description

F. C. FRIEBE.

VALVE TOOL.

APPLICATION FILED SEPT-17.1917.

1,296,279. Patented Mar. 4, 1919.

Y INI/ENTOI? A TTORNEI FRED 0. mean, or BAY CITY, MICHIGAN.

ALVE-TOOL.

Specification of Letters Patent.

Patented Mar. 4, 1919.

Application filed September 17, 1917. Serial No. 191,859.

To all whom it may concern:

Be it known that I, FRED C. FRIEBE, a citizen of the United: States of America, residing at Bay City, in the county of Bay and State of Michigan, have invented certain new and useful Improvements in Valve- Tools, of which the following is a specification.

The insides of pneumatic valves, such as generally provided for the inner tubes of pneumatic tires, are placed in position and removed bv means of a slotted tool acting jointly with lugs provided on the valve head. One or both of these lugs frequently become broken off or worn to such an extent that the tool fails to operate when it is required to remove the insides. of the valve. Under these conditions recourse must hadto an instrument to enable the insides of the valve to be removed, but it .not unfrequently happens that the use of such instruments mars the inner threads of the valve stem and is otherwise unsatisfactory in results.

This invention provides a tool which admits ofplacing the valve insides in position and removing them from the stem both under normal'and abnormal conditions and which admits of holding the valve open to provide an escape for the air when the tube is required to be deflated.

For a full understanding of the inven-.

tion, reference is to be had to the following description and the drawing hereto at-' tached, in which:

Figure l is a sectional view of a valve stem and a side view of the tool illustrating the latter in position for removing the insides of the valve;

Fig. 2 is a view in elevation of the tool and case therefor;

Fig 3 is a to View of the tool and case;

Fig. 4 is a side view of the tool;

Fig. 5 is a horizontal section on the line 4 4 of Fig. 4;

Fig. 6 is a' detail view of an end portion of the pin which is mounted transversely. in the head of the tool;

Fig. 7 is an end view of a mutilated valve stem; and g Fig. 8 is a sectional detail showing one use of the tool for truing a mutilated valve stem.

The tool comprises a head 7 a drift 8 at one end of the head and in line therewith and a pin-16, the latter being mounted in an opening formed transversely of the head 7 The pin 16 constitutes a handle for the tool and enables the same to be rotated. One end of the pin is slotted to make engagement with the head of the valve insides to admit of placing the same in position or removing them from the valve stem under normal conditions. The opposite end of the pin 16 is tapered, as indicated at 15, and the extremity of the tapered end 15 is formed with a depression 15 to makepositiv engagement with the valve when holding the latter open to provide an escape for the air when deflating the inner tube or like part. The tapered end 15 of the pin 16 also enables the latter to be eifeotively used as a cleanin pin for removing accumulations from the interior of the valve preparatory to re-tapping or cleaning the threads by the tapping hereinafter described. The

drift 8 is tapered throughout its length and of non-circular outline in cross-section, being preferably of triangular form as illustrated most clearly in Fig. 5. The corners rovided at the angles of adjacent faces bite into the head of the valve insides and enable such head to be positively turned when it is required to remove a mutiliated valve head which cannot be turned by the usual tool or by means of the slotted end of the pin 16. The head 7 and drift 8 are formed as one part and the pin 16 is sepprate and retained in lace in an opening formed transversely t rough the head 7.

The numeral 10 designates the stem of an air valve such as commonly pi'ovided in connection with the inner tubes of pneumatic tires. This stem 10 is formed with a bore to receive the valve insides and the upper portion of the bore is internally threaded as indicated at 14. The insides of threads M of the stem 10." Lugs farmed on the upper ,or outer end ofthe head 9 to be engaged bythe usual valve cap or tool general y provided for placing the ice "valve insides in positionor removing them, I

train the stem 10 when the lugs 11 are in-' event of one or both of the tact. In the lugs 11 becoming worn or broken so as to prevent engagement of the usual tool therewith, it is necessary to employ an instrument which may be introduced into the stem 10 and make positive engagement with the head 9 to admit of rotating such head when removing the valve insides. The present tool provides for removing the insides of the valve when the usual tool fails to take hold of the head 9 and rotate the same. By introducing the drift 8 of the present tool into the stem 10 and pressing the pointed end into the opening of the head 9, and giving the tool a smart blow to cause the drift to engage the head 9, the latter may be turned by rotating the tool through the instrumentality of the pin 16. hen the point of the drift 8 is forced into the opening of the head 9, the drift is centered in the stem 10 and is thereby prevented from injuring the threads 14.

From the foregoing, taken in connection with the accompanying drawing, it will be understood that the invention provides a valve tool capable of ordinary use and which enables the inside of a valve when disabled to be readily removed from the valve stem without injury to the inner threads of such valve stem, the tool also embodying means for holding the valve open when it is required to deflate the inner tube or like part, this being accomplished by placing the recessed end 15" of the pin 16, on the stem of the valve and pressing the latter inward. The depression .15 prevents slipping of the pin and the tapered end of the pin provides ample clearance for the escape of the air. A suitable case 1:? is provided for receiving the tool as indicated most clearly in Fig. 2, such case receiving the drift 8 and a ortion of the head 7.

he head 7 is recessed in the end opposite that provided with the drift 8 and this recess is internally threaded, as. indicated at 19,'to form adie for cleaning. truing or renewing the threads at the outer end of the valve stem 10. The outer end of the threaded recess is counter-bored to prevent injury to the threads 19 when blows are delivered on the head 7 to force the drift 8 into the part 9.

A second pin 17 is fitted in a transverse opening of the head 7 and extends at aright angle to the pin 16. One end of the pin 17 is threaded at 18 to form a tap for cleaning, truing or renewing the inner threads of the stem 10. The extremity of the tap 18 is reduced at 18 to prevent injury to the thread when striking the tap on its end to side faces forming edges adapted to be driven into engagement with a valve, the striking edge of the head permitting the tool to be struck for driving the drift into a valve without injuring the threads.

A valve tool comprising a head having a transversely disposed pin extending from opposite sides of the head and tapered at one end to form a truing portion and threaded at the other end and reduced beyond the screw-threads to provide a strikin end to permit the truing end to be driven into a valve stem without injuring the threads.

3. A'valve tool comprising a cylindrical head interiorly threaded at one end and recessed beyond the threads to provide a striking edge, a drift extending from the other end of the head, the striking edge of the said head permitting the toolto be'struck for. driving the drift into a valve without injuring the screw-threads, and a transverse c caning pin extending from thehead at a point between the threads and the drift and forming a handle for the tool when driving the drift, and also when rotating the head, and the latter forming a handle for the cleaning pin in the operation of the same.

In testimony whereof I aflix my signature.

FRED G. FRIEBE.

Images