US1510386A - Automatic cut-off - Google Patents

Description

I. M. CHANNELL AUTOMATIC CUT-OFF Sept. 30 1924 Filed May 29, 1922 'INVENTOR ATTOR N EY Patented ept. 3i 1&243.

entree ISAAC M. CHANNELL, TH DUQUESNE, PENNSYLVANIA.

AUTOMATIC OUT-OFF.

Application filed. May 29, 1922. Serial No. 564,429.

To all whom it may concern: I

Be it known that 1, Isaac M. CHANEELL, a citizen of the United States, residing at Duquesne, in the county of Allegheny and State oi Pennsylvania, have invented new and useful Improvements in Automatic Cut- Oiis, of which the following is a specification.

This invention relates tocontrol devices, and more particularly to what I term an automatic cut-off for use in connection with a flush tank.

One of the main objects of the invention is to provide a device of simple construction and operation which may be produced at small cost and can be readily applied. A further object is to provide a device which will serve to effectually prevent water from flowing into the tank after the tank has become filled to its normal height. Further objects will appear from the detailed description.

Inthe drawings Figure 1 is a side view of the device as applied.

Figure 2 is a top plan view.

Figure 3 is a section through the valve casing and associated parts.

The device includes a hollow casing or head 1 which is secured on the upper end of a water supply pipe 2 passing through the bottom of tank A. Head 1 is provided with a neck 3 in which is secured the lower portion of a cylindrical body 4 having a central bore 5. The upper portion of body 4 is tapered at 4 to fit into a recess provided in a threaded neck 7 carried by a block 6 at the upper end of a cylindrical casing 8 which fits about body 4. By raising casing 8 the upper end of body 4 is uncovered or opened to permit water to flow from said body into the upper portion of the casing.

A main lever 9 is pivoted at 10 in block 6 and is connected at one end by links 11 to a supplemental lever 12 which is pivoted at 13 in the block at the opposite side there of from the pivot of lever 9. A rod 14- is secured to the outer end of lever 12 and carries a ball or float F which is raised by the water as it rises in tank A.

Lever 9 is pivotally connected at its central portion, by links 15, to neck 3 of the head or casing 1, the block being provided with a vertical slot to accommodate the pin 15 which secures the upper ends of the links to the lever. A Weight 16 is suspended from the other end of lever 9 and acts to normally force casing 8 downwardly so as to hold neck 7 of block 6 seated over the upper end of body 4 thus effectually cutting oil supply of water to the upper end of the casing. When the water is discharged from tank A the float F causes downward movement of lever 12 about its pivot 13. This results in the end of lever9 remote from weight 16 being depressed through the medium of links 11 thus raising casing 8, the pin 15 acting as a fulcrum for lever 9 and the casing being lifted by means of pivot 10 and block 6. This uncovers the upper end of body 4 so as to permit water to flow into the upper portion of casing 8, this water flowing through an outlet tube 17 which communicates with the casing adjacent the lower end of neck 7, the lower end of this tube being positioned a short distance above the bottom of tank A. When the float F has been returned to normal position so as not to exert any downward pull upon lever 9, weight 16 acts to hold the easing 8 in lowered position thus positively preventing water from flowing through body 4. This provides simple and eflicient means whereby leakage and consequent waste of water is eliminated.

To facilitate raising and lowering of casing 8, pins 15 and 10 are a loose fit through lever 9 so as to permit relative movement between these pins and the lever, as will be readily understood by those skilled in the art. If desired, the lever 9 can be provided with a slot to accommodate either pin and permit movement thereof longitudinally of the lever, though ordinarily this is not necessary as casing 8 is moved but a short distance in either direction and the relative movement between the pins and the lever is very slight.

What I claim is 1. In an automatic cut-oii. a water receiving head, a body secured in said head and provided with a longitudinally extend ing bore, a casing fitting about said body, a member in said casing positioned to seat upon and close the upper end of said body when the casing is lowered, the casing being provided with an outlet opening below and adjacent to said member, a block carried by the closing member, a lever pivoted in said block, a second lever pivoted in the block below the pivot point of the first mentioned lever and at the opposite side of the block therefrom, links pivotally connecting said levers, a rod""-'secured to the second inentioned lever, a float carried by said rod, links connecting the first mentioned lever and the head, said links being pivota-lly connected to said first mentioned lever between the pivot point thereof and the links connecting the levers, and a weight suspended from the first mentioned-lever at the opposite ends thereof from the links which connect the levers.

"2.111 an automatic cut-off, a water rece'iving head, a body secured in said head and having a longitudinally extending bore, a casing fitting about said body, a block having a depending neck secured in said casing and positioned and adapted to fit about the upper portion of said body so as to close the bore through the same when the casing is in loweredposition, a main operating lever pivoted 1'11 the block at one side thereof, a supplemental lever pivoted 1n the block at the other side thereof and below said main le er, links connecting said supplemental lever to the main lever at one end thereof a rod secured to the supplemental lever, 21 float carried by said rod, links pivotally connecting the head and the main lever between the first mentioned links and the pivot point of said main lever, and a ISAAC M. CHANNELL. v

Images