US1675752A

US1675752A - Valve cap

Info

Publication number: US1675752A
Application number: US451834A
Authority: US
Inventors: Fred D Farr
Original assignee: Schraders Son Inc
Current assignee: Schraders Son Inc
Priority date: 1921-03-12
Filing date: 1921-03-12
Publication date: 1928-07-03
Anticipated expiration: 1945-07-03

Description

Jul a, 192s;

- 1,675,752 I F. D. FARR I VALVE CAP Filed March 12, 1921 glmcntm.

FRED o. FARR Patented July 3, I928.

UNITED STATES 1,675,752 PATENT,- OFFICE.

FRED D. FARR, 0F PERRY, NEW YORK, ASSIGNOR T0 .A. SCHBADERS SON, INCORPO- RATED, OF BROOKLYN, NEW YORK, A CORPORATION 01 NEW YORK.

VALVE CAP.

Application filed March 12, 1921. Serial no. 451,834L" The object of this invention is to provide a new and improved form of quickly detachable cap for the valves of automobile tires, or any other form ofpneumatic tire.

Another object of the invention is to cheapen the cost of making the cap.

This and other objects of the invention will be illustratedin the drawing, described in the specification, and pointed out in the claims at the end thereof. a

In the drawings:

Fig. 1 is a side elevation of the valve and the cap therefor, partly broken away.

Fig. 2 is a horizontal section, thru the valt e and the cap on the line 2*-- of Fig. 1.

Fig. 3 is a perspective view of the spring that is inserted in the cap for the purpose of yieldingly holding the cap in place on the valve.

Figs. 4 and 5 are sectional elevations of the cap with modified forms of springs.

Fig. 6 is a perspective view of a modified form of spring for the valve cap.

Fig. 7 is a horizontal section thru the spring on the line 7 7 of Fig. 6.

Fig. 8 is a side elevation of the cap fitted to a small valve casing and adapting nut.

Fig. 9 is a side elevation of the cap, partly broken away in section, showing the spring sleeve fastened to the cap by a rivet. L

In the drawings-like reference numerals indicate like parts. p

In the drawings, reference numeral 1 indicates the valve casing such as is ordinarily used on pneumatic tires and 2 indicates the nut which rests against the rimand holds the valve casing and inner tube in place. 3 indicates the dust cap of my improved design, which cap is provided, intermediate its ends with an annular bead 4 and on its open end is provided with an inwardly spun flange 5. In the annular spacerbetween the flange 5 and the bead 4 is provided a spring 6, which spring is made of a flat piece of spring metal bent to the shape of the sleeve with the meeting edges thereof comin together as indicated at 7. The ends -0 the spring sleeve are spun outwardly as indicated at 8 and 9 to engage with the bead Al and the flange 5, so that the spring is held positively in place thereby. n this way the spring is mechanically held securely in place at the open end ofthe valve cap. The spring 6 engages the valve casing and sli s over it as the cap is put in place and t e spring opens along the line 7 to closely fit the valve casing and grip it yieldingly. The spring yields and accommodates itself to any inequality in the surface of the valve casing and firmly holds the cap in place thereon and it also practically fills the opening between the cap and the valve casing so as to exclude dust, etc., from the cap. i

In Fig. 4 I have shown a modificationof the cap 10 in which the cap is drawn to the i shape of a straightthimble of-substantially uniform diameter thruout, the bead being omitted and the open end of the cap being spun in with a flange 5. Inside of' the cap is placed asspring sueh as is shown in Figs. 6 and 7 having the form of a long sleeve, which spring may or may not be provided with the inturned serrated or waving edge 11 on one of the meeting edges of the spring. This edge may also be bent inwardly, as indicated at 20 in Fi 7, so that it will make direct contact with t e threaded portion of the casing and each projection thereon will the better engage with the threaded portion of the casing and hold the cap in place on that account. The spring is provided at itslower end with the outwardly turned flange 12, which is engaged by the flange 5 spun on the open end of the cap and the spring is held in place thereby. When the cap is pushed on the valve casing, the spring 13 engages the casing and yieldingly holds the cap in place thereon.

In Fig. 5 I have shown a modified form of the cap in which 15 indicates the cap having an annular bead 16 spun around it near the closed end thereof. In the cap is provided a spring 17 having a flange 18 spun on the 11 per end thereof, which enages with the loead 16 from the inside, and y which the cap and spring are held together. The spring 17 is provided at its lower end with the flange 19 that comes within the open end of the casing. This flange flares outwardly and serves to steer the spring and cap to their proper places on the valve casing.

'In Fig. 8 I have shown a casing of small diameter'fitted with the adapting nut 23. which nut is provided with the threaded sleeve 22 which extends along the valve casing and partly covers it and is threaded on the outside. This nut is furnished as standard equipment for small sized valve casing to receive on its threaded sleeve the ill cap for the large sized casings, this being the only sized cap furnished for both valve casings.

It willbe understood that valves for pneu: matic tires are regularly carried in stock and furnished to the trade with two different sizes of casings, the diameter and length of one size being greater than the diameter and length of the other size. The valves having the small casing are used on the small tires, such as are ordinarily used on the front wheels of Ford cars.

The valve cap, with its threaded end of standard size, can engage directly with the threaded casing of the large valve or with the threaded sleeve of the adapting nuton the small sized valve and will be held firmly in place in either instance by such engagement. Y

I claim:

1. A quickly'detachable cap for a valve comprising a cap having a bead formed'circumferentially around the body thereof, a spring sleeve held loosely in place within said cap and made of sheet metal bent intosubstantially circular form to fit the cap and left open on one side, said sleeve resting against the bead at one end and the end of the cap being bent inwardly to form a flange to hold the sleeve at the other end.

2. A quickly detachable capyior a valve comprising a, cap having a bead formed circumferentially around the body thereof,

a spring sleeve held loosely in place Within said cap and'mllde of sheet metal bent into substantially circular form to fit the cap and left open on one side, said sleeve resting against the bead atone end, the end of the cap being bent inwardly to form a flange to hold the sleeve at the other end and said sleeve having its ends expanded.

3. A quickly detachable cap for a valve comprising a cap, a" sleeve held loosely in place Within the cap, said sleeve being made of sheet metal bent into substantially cir FRED D. FARR.