US1349594A - Gage or try-cock - Google Patents

Description

W. H. WAFER AND J. MURRIN.

GAGE 0R TRY COCK.

APPLICATION FILED uov.20.1919.

1,349,594. Patented Aug. 17, 1920.

2 SHEETS-SHEET I.

i, y, W

@Wsar JIIIIIIIT M WW W. H. WAFER AND 1. MURRIN.

GAGE UR TRY COCK.

APPLlCATlON men NOV. 20, 1919. 1,349,594. Patented Aug. 17, 1920.

2 SHEETS-SHEET 2.

VIII 1/ l the generation of steam therein should be UNITED STATES PATENT OFFICE.

GAG-E 0R TRY-COCK.

Specification of Letters Patent. Patented Aug. 17, 1920.

Application filed November 20. 1919. Serial No. 339,432.

To all whom it may concern:

Be it known that we, WILLIAM H. WAFER and JOHN MURRIN, citizens of the United States, and residents of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Gages or Try-Cocks, of which the following is a specification.

Our present invention relates to improvements in gages or try-cocks of a type somewhat similar to that disclosed in Letters Patent of the United States, 1,223,749, issued to us on April 24, 1917, and has for one of its objects to improve the construction and efliciency of devices made according to our aforesaid Letters Patent and to provide a device to be used on steam boilers for gaging or determining the quantity of water contained by the boiler, and it consists in certain peculiarities of the construc tion, novel arrangement and operation of the various parts thereof, as will be herein- I after more fully set forth and specifically claimed.

Further objects and advantages of the invention and the difficulties or objections to be avoided thereby are similar to those set forth in the above named Letters Patent and are as follows:

As is well known to engineers, and those skilled in the art to which our invention pertains, there is a law in effect which requires the tubes of such cocks leading into the boilers and communicating with the water therein, to be routed out every time the boiler is Washed, and that the valves and other parts of the cooks shall be frequently inspected, cleaned, repaired, or renewed, in fact, that such cocks shall be kept in perfect working conditions at all times, and by reason Of'lihfi construction of the cooks heretofore in common use, in order to rout out the water tubes thereof, the valves, valve seats, packing and the like, had to be removed in order to gain access to the interior of said tubes with the'routing instru- 'ment, and that after routing had been done,

the valves and said other parts of the cocks would have to be reassembled, all of which required a great deal of time, skill and labor. Besides, in order to rout the said water tubes, it was necessary for the locomotive or boiler to become dead or that stopped, to, prevent danger of scalding or injuring the operator.

To provide a gage or try-cock which shall be simple and inexpensive in construction, strong, durable and eflicient in operation, and so made as to avoid the above named difficulties and objections by afiordingrneans for routing the water tube thereof without danger to the operator by the removal of but one of the members or. parts of the cock and to provide means whereby the main valve and seat thereof, or either of them, should they become defective or require cleaning, grinding or repairs, can be readily removed, while the locomotive or boiler is live or contains steam, and new,

ones, or others, replaced in their stead with out waiting for the cleaning, grinding or repairing of the old ones, are objects of the present invention.

Other objects and advantages of the invention will be disclosed in the sub-joined description and explanation.

In the accompanying drawings, which serve to illustrate our invention- Figure 1 is a plan view of the cock showing it mounted on a portion of the wall or front plate of the boiler.

Fig. 2 is a view partly in section and partly in elevation taken on line 2-4} of Fig. 1 looking in the direction indicated by the arrows, showing the construction of the main valve and the manner of mounting the same on its stem and illustrating the main valve as well as an auxiliary valve with which the cock is equipped in open position.

Fig. 3 is a sectional view taken on line 3-3 of Fig. 1 looking in the direction indicated by the arrows. Fig. 4 is a view similar to Fig. 2 but showing the parts of the cock in the positions they will occupy when it is desired to remove the main valve and its stem and the valve seat tube for said valve for repairs or replacement.

Fi 5 is a similar view to Fig. 4 but showing the cock equipped with a routing device, and

Fig.- 6 is a detached perspective view of a removable plug usedrin the outer end of the valve casing.

Corresponding numerals of reference refer to like parts throughout the different views of the drawings.

The reference numeral 5 designates a portion of the boiler, for instance, the front face or wall thereof, which is provided with a screw-threaded opening 6 in which an externally screw-threaded enlargement 7 on the water tube or extension 8 of the cock is fitted.

The outer end of the extension is provided with a valve casing 9 which is transversely arranged with respect to the part 8 and by preference vertically thereon. This valve casing is provided with a longitudinally extended opening 10 therethrough which opening is furnished with screwthreads in its upper and lower portions, but by preference that part of said opening 10 with which the opening 11 in the tube or extension 8 intersects is without screwthreads, and it will be observed that the end of the opening 11 in the valve casing is provided with a valve seat 11 for the purpose to be presently explained.

That portion of the casing 9 opposite the outer end of the channel or opening 11 in the extension 8 is provided with a boss 12 which has an internally screw-threaded opening 13 to receive a screw plug 14 which as shown in Figs. 2 and 6 of the drawings is provided with a longitudinal bore 14 and near the head of said plug with a transversely disposed tell-tale opening 14 which latter opening will be closed when the said plug is screwed up. The plug 14 can be removed when it is desired to rout or clean the opening 11 of the water tube of the cock. Also in the lower portion of the opening 10 of the casing 9 and in screw engagement therewith is a screw-threaded plug 15 which has extended through an outwardly tapered opening 16 therein an outwardly tapered valve seat tube 17 which as is clearly shown in Fig. 2 of the drawings has in its upper end a flared and inwardly or downwardly beveled cavity 18 which communicates with an opening 19 which extends longitudinally through said tube.

This tube is by preference somewhat longer than the plug 15 and so tapered that it will fit within the opening 16 of the plug, so that its upper end will normally be about flush with the surface of the channel 11 in the water tube 8 of the cock, and so that its lower end will project some distance below the lower end of the plug 15, as is clearly shown in Fig. 2 of the drawings. By this arrangement it is obvious that the screw plug 15 can be removed from the opening 10 in the casing 9 by turning said plug in the proper direction, when, if it is desired, the valve seat tube 17 can be removed from the plug 15 b i simply striking the lower end of the tube 1 on a solid body, when it will be driven upwardly in the plug 15 and can be easily removed. to permit of [he insert ion in the openin 16 of said plug, oi another valve seat tu )e of the same construction. Located in the upper portion of the opening 10 of the valve casing 9 is a valve carry ing stem 20 which may have liilcd on its upper end a wheel or handle 21 for turning the said stem. This stem is by preference provided with an enlarged screw-threaded portion 22 which en ages the screw-threads in the upper part 0 the opening 10 of the casing, and saidenlarged portion has in its lower end a screw-threaded opening 23 to receive and engage the scrmv-threaded extension 21 on the upper portion of the valve 25 which is shaped to fit the valve seat 18 in the upper end of the removable valve seat tube 17 when the valve 25 is screwed down so as to prevent the passage of water through the cock.

Located in screw-threaded engagement with the upper portions of the casing 9 and surrounding the valve stem 20 is a gland or cap 26 between the upper portion of which and the upper end of the casing 9, packing 27 of any suitable kind may be interposed.

So far, the construction of the parts of the present application are substantially the same as those shown and described in our above named Letters Patent, except that the screw plug 14 in the present construction is provided with a longitudinal bore 14 and a transverse vent or opening 14 leading therefrom, and that the inner end of the channel 11 in the present construction is provided with a valve seat 11, which features are not used in the patented construction.

By employing the plug 14 with a tell-tale opening 14 or vent it is evident that when the main valve 25 is in its open position, that if the plug 14 is turned suflioiently to expose the opening 14 water, if it reaches in the boiler to the channel 11, will be discharged through said opening and thus the user of the valve will be so informed.

In the present construction of the device, in order to enable themain valve 25 and valve seat tube 17 to be removed for repairs or replacement by new ones, without possible injury to the operator or user by hot water or steam, we employ a pet-cock 28 located transversely in the boss or extension 12 between the inner end of the screwthreaded part of the opening 13 therein and the opening 10 of the valve casing, and a detachable valve rod 29, whiclrrod has at its inner end a valve 30 adapted to fit in the seat 11 of the channel 11 of the tube or extension 8, as is clearly shown in Fig. 4 of the drawings.

The pet-cock 28 has a detachable handle 31 mounted on its outer portion and surrounding it inwardly of said handle is an apcrtured screw-threaded collar 32 which engages a screw-threaded opening 33 in the boss or extension 12 of the casing. The inner portion of the cock .28 is enlarged as is clearly shown in Fig. 3 and is provided with a transverse opening 34 adapted to register with an opening 35 leading from the openopening 13 and screwing up the sleeve 36 therein, it is obvious ing 10 that the pet-cock 28 may be turned to its open position as shown in Fig. 4, when the rod 29 can be screwed up and extended through the opening 3 1 of the pet-cock until the valve 30 on said rod is seated in the valve seat 11 of the extension 8 leading to the boiler.

It will, of course, be understood that before the valve 30 on the rod 29 can be thus seated, the main valve 25 must be raised to about the position shown in Fig. 4 of the drawings. When the parts are thus assem bled, it is manifest that the plug 15 carry ing the valve seat tube 17 can be removed and that the valve stem 20 and the main valve 25 thereon can be detached from the valve casing by turning the gland or cap 26 in the proper direction, and that escape of water or steam will be positively prevented.

When it is desired to rout out the tube 8 of the device substantially the same operation is performed as just above described. However, in this last named operation we employ a routing rod or instrument 3? having its inner end provided with a slight enlargement 38 pointed and angular in cross-section to cut or scrape from the walls of the channels 11 any crustations or material which may adhere thereto. The rod or instrument 37 is provided at its outer end with a handle 39 and has slidably mounted thereon inwardly of the handle an externally screw-threaded sleeve 40 which is adapted to engage at its inner end the screw-threaded opening 13 in the extension or boss 12 of the valve casing after the screw plug 14 has been removed therefrom.

\Vhen using the routing instrument, it will be understood that the sleeve 40 will be slid thereon until the head or enlargement 38-is inclosed by the sleeve when it is apparent that the latter can be screwed into the opening 13 without the head or enlargement 38 interfering with the pct-cock when the same is in its closed position. After the sleeve 40 and the rod 37 have been located in the boss 12 as last above described, it is obvious that the pet-cock can be turned to its open position as shown in Fig. 5 when the rod 37 can be advanced into and rotated in the channel 11, thus removing any accumulations on the walls of said channel.

In order to provide a stop for the handle 31 of the pet-cock the valve casing 9 is pro. vided just below the extension 12 with a lateral projection 41 against whiclr said handle will strike when turned in either direction.

Having thus fully described our invention, what we claim as new and desire to secure by Letters Patent is- 1. A gage or try-cock consisting of a casing having a channel adapted to communicate with a boiler and provided with a passage located transversely with respect to said channel and intersecting the same and also provided with a passage in alinement with said channel, of a removable plug located in the last named passage and having a longitudinal bore and a transverse opening communicating with said bore, a pet-cock located in the casing between the inner end of said plug and the transverse passage and intersecting the passage in which the plug is located, an orificed valve seat removably located in the transverse passage on one side of said channel, a stem adjustably mounted in the opposite portion of said transverse passage and a valve on the inner end of said stem and adapted to close said removable valve seat.

2. A gage or try-cock consisting of a casing having a channel adapted to communicate with a boiler and provided with a passage located transversely with respect to said channel and intersecting the same and also provided witha passage in alinement with said channel, a removable plug located in the last named passage, an orificed valve seat removably located in the transverse passage on one side of said channel, a stem adjustably mounted in the opposite portion of said transverse passage, a valve on the inner end of said stem and adapted to close said removable valve seat, a pet-cock transversely located in the casing between the inner end of said plug and said transverse passage, an elongated member adapted to be extended into the passage in which said plug is located after the same has been removed from its passage and through a passage in the petcock and having a sleeve movably mounted thereon to fit in the passage from which said plug shall have been removed.

3. A gage or try-cock consisting of a. casing having a channel adapted to communicate with a boiler and provided with a passage located transversely with respect to said channel and intersecting the same and also provided with a passage in alinement with said channel, a removable plug located in the last named passage and having a longitudinal bore and a transverse opening communicating with said bore, an orificed valve seat removably located in the transverse passage on one side of said channel, a stem adj nstably mounted in the opposite portion of said transverse passage, a valve removably mounted on the inner end of said stem and adapted to close said valve seat, a rotary valve transversely located in the casing between the inner end of said plug and said transverse passage, said channel having at its inner end a valve seat, an elongated member adapted to be extended into the passage in which said plug is located after the same has been removed from its passage and through a passage in 'said rotary valve and having a sleeve movably mounted thereon to engage in the passage from which said plug shall have been removed, said elongated member having on its inner end a valve to close the valve seat on the inner end of said channel.

al. A gage or try-cock consisting of a casing having a channel adapted to be placed in communication with a boiler and provided with a screw-threaded passage located transversely with respect to said channel and in tersecting the same and also provided With a screw-threaded passage in alinement with the outer end of said channel, a screwthreaded plug located in the last named passage and having a lon itudinal bore and a transverse opening communicating with said bore, an apertured and externally screwthreaded plug located in the transverse passage on one side of said channel, a tube located in the opening of said last named plug and having a valve seat in its inner end, a valve stem screw-threaded in the opposite portion of said transverse passage, a valve removably connected to the inner end of said stem and adapted to close said valve seat, a rotary valve located in the casing between the inner end of the first named screw plug and the transverse passage and intersecting the passage in which said plug is located, and an elongated member adapted to be extended into the passage in which the first named screw-threaded plug is located after the same has been removed from its passage and through a passage in said rotary valve and having a sleeve movably mounted thereon to engage in the passage from which said plug shall have been removed;

In testimony whereof, we have hereunto set our hands, at Chicago, Illinois, on this, the 15th day of November, 1919.

' WILLIAM H. WAFER.

JOHN MURRIN.

Images