US 2632623 A
Description (OCR text may contain errors)
March 24, 1953 J. w. COLWELL GAS JET SAFETY LOCK Filed Feb. 7, 1951 INVENTOR. Jess WI CoZwaZZ ATTU RNEYS Patented Mar. 24, 1953 c m" oFncs GAS JET SAFETY Look I Jess W. Oolwell, Texas City, Tex. Application February 7, 1951, Serial No. 209,846
-. This invention relates adapted for gas jets or valves on gas cooking stoves, heaters and other types of burners, and in particular this invention relates'to a bar having a recess in one side thereof with a clip pivotally mounted on the bar and adapted to close the recess. and the bar is formed whereby with one end positioned between the handle of the valve and stem and with the other placed over the opposite end of the "stem it would be impossible to open the valve with the clip in position on the bar.
The purpose of this invention is to prevent accidental opening of gas valves where gas is discharged into rooms, buildings and the like without being'lighted, and also to prevent children opening the valves ofxgas ranges, heaters and. thelike. v
In' the conventional type of valve or cock used on ga's ranges, heaters and the like the handles are often accidentally turned by a person passing by the stove orheater andvalves of this type are frequently opened by children. The escap ing gas resulting from accidentally opening gas valves not'only overcomes persons entering the V operating the valve before the valve is opened.
Another object of the invention is to provide a safety clip for the valves of gas ranges, heaters and the like that may readily be installed on valves now in use without changing parts of the valves.
A further object of the invention is to provide a safety latch for preventing accidental opening of gas valves and the like which is of a simple and economical construction.
With these and other objects and advantages in view the invention embodies a gas valve safety latch formed with a bar having a forked end, an opening in one side and an opening in the opposite end, and a cap pivotally mounted on the bar and positioned to close the opening in the side thereof.
Other features and advantages of the invention will appear from the following description taken in connection with the drawing wherein:
Figure 1 is a side elevational view of the gas Claims. (01. 251-453) to devices particularly valve having the safety latch positioned thereon, and with the valve in the open position.
Figure 2 is a similar View of the valve .with the handle and latch turned to the position in which the valve is closed. l
Figure 3 is an end elevational view of the valve shown in Fig. 1 showing the clip of the safety latch in the open position.
Figure 4 is a similar view of the valve shown in Fig. 2 showing the safetyclipand handle of the valve with the parts in the closed position.
Figure 5 is a longitudinal section throughthe valve shown in Fig.2 being taken on line 55 thereof illustrating the position of the: clip on the latch bar and showing part of the handle of the valve broken away.
Figure 6 is a detail illustrating the safety dejvice of this invention with the clip in the; open position. I t
Referring now to the drawing wherein like reference characters denote corresponding parts the improved safety latch of this invention in-'- cludes a bar in having a recess l l in. oneside, a fork including prongs l2 and IS on one .end and an opening l4 in the opposite end, and a clipv l5 pivotally mountedon the bar II) We. pin [6. .The end of the baron which. the fork is positioned is also provided with a slot I! which extends downwardly into an opening l8 positioned between the prongs l2 and I3 of the fork and the clip I5 is provided with a U-shaped stop l9, as illustrated in Fig. 5 which extends over the end of the bar l0 when the clip is in the closed position.
The bar I0 is also provided with an ofiset section 20 whereby with the intermediate part of the bar positioned over a valve body as indicated by the numeral 2|, the end of the bar in which the opening I4 is positioned may be located against the knob 22 of the valve stem 23 so that the bar It] may be held in position by the handle 24 of the valve. The handle 24 is provided with a stem 25 that is threaded into the knob 22, as illustrated in Fig. 1, thereby providing means 'for mounting the handle on the end of the stem.
In installing the latch the handle 24 is removed, the end of the bar in which the opening [4 is positioned is placed over the threaded opening 26 in the knob 22, and the stem 25 threaded into the opening whereby the bar is clamped between the handle and knob 22.
At the same time the prongs l2 and I 3 of the fork at the opposite end of the bar are positioned over the end of the stem 23 projecting 3 from the opposite end of the valve body 2i, as illustrated in Figs. 1 and 2.
With the parts in this position and with the clip I closed, as shown in Fig. 2, it will be impossible to turn the handle 24 from the position shown in Fig. 2 to that shown in Fig. 1 in order to open the valve.
When it is desired to open the valve the clip I5 is snapped about the pivot pin I5 from the position's'h'own in Fig; 2to that shown in Fig. 6 whereby the recess H is open and the'handle' 24 may be turned to permit the shank 21 of the valve to enter the recess I.
By this means it is possible to lock the valve with the handle extended in the closed position and it will be impossible to accidentally open the valve and also substantially impossible for a child to open the valve.
It will be understood that modifications may be made in the design and arrangement of the parts without departing from the spirit of the invention.
.Wh'at is claimed is:
1. A safety latch for gas'valves comprising a bar having a fork extended from one end, a recess. in one side and an opening in the end opposite to the end on which the fork is positioned, and a clip having a projection providing a stop thereon pivotally mounted on one side of the bar and positioned to cover the recess in the side thereof.
2..Asafety'latch for gas valves comprising a bar having a fork extended from one end, a recess in one side and an opening in the end opposite to the end .on which the fork is positioned, and a clip pivotally mounted on one: side ofithe-barand positioned to cover the recess in .theside'thereof, said bar having an offset therein spaced from the end in which the opening is positioned and said clip having a projection on oneedge providing a stop for retaining the clip in theposition of closing the recess in the side of the bar.
:3. A safety latch for gas valves comprising a bar having a fork extended from one end, a recess 4 from the end in which the opening is positioned, and said clip having a stop positioned on one edge thereof for limiting the closing movement thereof.
4. A safety latch for gas valves comprising a bar having a fork extended from one end, a recess in one side and an opening in the end opposite to the end on which the fork is positioned, and a clip pivotally mounted on one side of the bar, with the pivot spaced-from the end of the bar in which the opening is positioned; a'ndwith the clip positioned to cover the recess in the side thereof, said bar having an ofiset therein spaced from the end in which the opening is positioned, and said clip having a stop positioned on one "edge 'thereoffor limiting the closing movement thereof.
5. In a valve safety device, the combination which comprises a valve body, a stem extended through the said valve body, a handle having a stem extended therethrough mounted on an extendedend of the stem, a bar'having an opening through one end extended across the valve body and positioned withthe opening in'theend thereof positioned to receive the stem of the handle whereby the end of the bar in which; the opening is positioned is located between the handle and end of the valve stem-upon which the handle is mounted, said bar having a recess in one sidepositioned to receive a'shank extended from the valve body, said bar also havinga fork extended from the end opposite to the end in which the opening is positioned'and said fork positioned toextend over an extended end of the valve stem extended-from the opposite end of the valve body, and a clip pivotally mounted on the bar, positioned to cover the recess-in the side of the bar and having a stop on-one edge thereof for limiting closing movement of. the clip.
JESS W. COLWELL.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,079,254 McCarthy Nov. 18, 1913 1,806,775 Wilde May 26, 1931 1,839,053 Schaded Dec. 29,1931