US1406133A - Quick-detachable cap - Google Patents

Description

C. D. WRIGHT.

QUICK DETACHABLE CAP.

APPLICATION FILED DEC. 14, 1920.

1,406, 1 33. Patented Feb. 7, 1922.

2 SHEETSSHEET I.

M mmvrog.

@ ATTORNEYS.

C. D.-WR|GHT.

QUICK DETACHABLE CAP.

APPLICATION FILED DEC. 14, 1920.

2 SHEETSSHEET 2- Iatented Feb. 7, 1922.

ASINVENTOR. z BY h A TTORNEYS.

UNITED STATES cmom. n. wme rr, or WEBSTER, NEW YORK.

PATENT OFFICE.

QUICK-DETAGHABLE CAI.

Specification of Letters Patent.

Patented Feb. '7, 1922.

Application filed December 14, 1920. Serial No. 430,677.

To all whom it may concern:

Be it known that I, CARROLL D.- WRIGHT, a citizen of the United States, and resident of Webster, in the county of Monroeand State of New York, have invented certain new and useful Improvements in Quick-Demoved from the threaded body and will ef-- fectively secure the cap to such body.

To these and other endsthe invention consists of certain parts and combinations of parts, all of which will be hereinafter described, the novel features being pointed out in the appended claims.

In the drawings:

Fig. 1 is a view of one embodiment of the cap partially in section attached to a tire valve stem, only a fragment of the latter being shown;

Fig. 2 is a fragmentary view of the lower end of the cap;

Fig.- 3 is an end view of the open end of the cap;

Fig. 4 is a section on the line 4--4, Fig. 1 showing the cap before it is rotated into engagement with the threads;

Fig. 5 is a like section showing the cap after the same has been rotated into engagement with the threads;

Fig. 6 is a fragmentary view showing the manner in which the retaining devices en-' gage with the threads;

Fig. '7 is a fragmentary view of another embodiment of the invention;

Fig. 8 is a horizontal section through the embodiment illustrated in Fig. 7 showing the manner in which it engages the stem;

Fig. 9 is a detail view of the wire member from which the two retaining devices of Fig. 7 are formed;

Fig. 10 shows in side elevation, another embodlment of the invention attached to a valve stem;

Fig; 11 1s a view partially in section and elevation of the embodiment shown in 1g. 12 is a section on the line 1212,

Flg. 10;

Fig. 13 is a view partially in section and elevation of still another embodiment of 60 the invention;

Fig. 14 is a view in section and elevation of still another embodiment of the invention attached to a valve stem;

Fig. 15 is a section on the line 15-15, 65

Fig. 14;

16 is a view in elevation of the embodiment shown in Figs. 11 and 15; and

Flg. is a detail perspective view of the resilient means employed in the embodiment illustrated in Figs. 14 to 16 inclusive.

According to this invention, the cap has two ylelding or resilient devices separated from each other so that such devices may have the screw threaded portions of the stem or body to which the cap is to be fitted, operate between them upon the fitting of the cap to such body, these resilient de- V1ces engaging'with the threads u on rotation of the cap on the body and y1elding to accommodate themselves to the threads. Preferably, these yielding devices yield in two directions, namely, in the direction of the axis of the cap and also transversely of such axis, so that they may enter readily between the threads while at the same time maintaining firm frictional engagement with the threads.

In theembodiment of the invention illustrated in Figs. 1 to 6 the cap body 18 has a mouth or open end of a diameter greater than the diameter of the threaded ortion of the stem or body to which the cap is to be fitted. Opposite walls of the cap body 18 adjacent the mouth or open end are pro- 96 vided with slots 19 and in these slots two short pieces of resilient material such as wires 20 are fitted, the ends of the wires resting against or abutting the ends of the slots. A

ring 21 surrounds the cap body 18 100 Figs. 1 to 6.

about the slots and serves for holding the resilient. devices 20 in place. The resllient devices 20 are spaced apart in the direction of the diameter of the cap such a distance that they may travel freely over the flattened faces 22 of the stem and they are also separated at their ends 'such distances that the threaded portions 23 of the stem may operate between such ends as shown in Fig. 4. Upon the rotation of the cap body toward the position illustrated in Flg. 5, the resilient bars or devices 20 will yield sd asto enter between threads on opposlte 'sides of the stem as shown in Fig. 6. This yielding takes place in two directions, namely, transversely of the axis of the ca body and also in the direction of the axis of the cap body, due to the factthat the device on one side of the cap body will be out of the plane of the device on the other side of the cap body on account of the spiral arran ement' of the screw threads.

In the em diment shown in Figs. 7 to 9, the two. resilient retaining devices 20 are formed from one piece of wire bent into substantially ring shaped formation and flattened at opposite sides to provide the re- .taining devices 20. This wire ring is split at 24 and is fitted within an annular groove 25 formed in the cap body 18 A boss 26 is pressed inwardly'fromfthe cap body at the annular groove to project into the split of the ring for the purpose of preventing the turning of the ring in the cap body. The operation of this embodiment of the invention is the same as that illustrated in In the embodiment shown in Figs. 10 to 12 inclusive, the cap body 18 is flared at its mouth to provide a seat 27 for a resilient ring 28. The retaining devices 20 are in the form of resilient projections or tongues extending loosely through slots 29 in opposite sides of the cap body and formed on pieces of said metal 30 which is soldered to the outer faces of the cap body. In this form of the invention, the tongues are resilient only in the direction of the axis of the body. Otherwise, the operation is the same as that described in Figs. 1 to 6.

In the embodiment shown in Fig. 13, the cap body 18 is formed like that shown in Figs. 10 to 12 except that the retaining devices 20 are in pairs on opposite sides of the body and project through slots 29 from pieces of resilient sheet metal 30, the two retaining devices. being formed at 0pposite ends of the sheet metal piece which is secured centrally to the cap body by a rivet 31. This construction'permits the retaining device not only to yield in the direction of the axis of the cap body, but also to yield transversely of said axis.

In the embodiment shown in Figs. 15 to except that the retaining devices 20 are in the form of extensions on a rubber body formed on opposite walls of the cap body. The rubber'extensions 2O yield to accom modate themselves to the threads in the man ner illustrated in Fig. 14.

In all embodiments of the invention, the cap is constructed to, fit over a valve stem or similar body provided with flattened sides and screw threaded portions between said flattened sides. The cap in being fitted t0 the body is moved longitudinally of the fiattened sides until the desired position of the cap is reached. Thereafter the cap is rotated on the stem and the retaining devices yield ingly engage with the threads. In some instances, these yielding retaining devices move in the direction of the axis of the cap and in other instances, they yield only in a direction transversely of the axis of the cap. In still other instances they yield in both of such directions.

The yielding in the direction of the axis of the cap permits the devices to accommodate themselves to the screw. threads while the yielding in the direction transversely of the axis produces a binding action on the screw threads. It is desirable that the mouth "of the cap be brought in abutment with'the part at the base of the stem as this assists the retaining action of the; retaining devices and this action is further assisted when the mouth of the caphas a resilient means surrounding it.

What I claim as m invention and desire to secure by Letters atent is:

.1. A quick detachable cap comprising a cap body provided with a pair of resilient devices on the interior and opposite walls thereof, separated at their ends to permit the fitting of the cap body to a suitable anchoring body, and to yieldingly engage the threads of said anchoring body on the rotation of the cap body after such fitting.

2. A quick detachable cap comprising a cap body provided with a pair ofresillent devices on the interior and opposite walls thereof, separated at their ends to permit the fitting of the cap body to. a suitable anchoring body, and to yieldingly engage the threads of said anchoring body on the r0- tation of the cap body after such fitting, said devices being yieldablein the direction of the axis of the cap.-

3. A quick detachable cap comprising-a cap body provided with a pair of resilient devices on the interior and opposite walls thereof, separated at their ends to permit the fitting of the cap body to a suitable anchoring body, and to yieldingl engage the threads of. said anchoring bo y on the '30 which is received within pockets 32 e rotation of the cap body after such fitting, anchoring body, and to yieldingly engage said devices being yieldable in a direction the threads of said anchoring body on the 10 transversely of the cap. v rotation of the cap body after such fitting,

4. quick detachable cap comprising a said devices being yieldable in the direction cap body provided with a pair of resilient of the axis of the cap and also yieldable devices on the interior and opposite walls in a direction transversely of the axis of thereof, separated at their ends to permit the cap. the fitting of the cap body to a suitable CARROLL D. WRIGHT.

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