US782957A - Dash-pot. - Google Patents

Description

PATBNTED FEB. 21, 1905.

H. J. FISCHER.

DASH POT.

nruonron FILED NOV. 18. 1904.

A %i 2 g l 2 tsa :f I;

Y NyTOR Allorney UNIT D STATES Patented February 21, 1905.

PATENT OFFICE.

HENRY J. FISCHER, OF MONMOUTH, ILLINOIS, ASSIGNOR TO THE MURRAY OF BURLINGTON, IOWA.

DASH-POT.

SPECIFICATION forming part of Letters Patent No. 782,957, dated February 21, 1905.

Application filed November 18, 1904. Serial No. 233,289.

To all whom it may concern:

Be it known thatI, HENRY J. Frsonnaa resident of Monmouth, in the county of Warren and State of Illinois, have invented certain new and useful Improvements in Dash-Pots; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improved dashpot, the object of the invention being to provide an improved connection between the connecting-rod and the plunger of the dash-pot which will permit longitudinal movement of the rod to compensate for any imperfect adjustment of the parts and prevent breaking of the rod or other mechanism in the event the rod be too long or too short.

With this object in view the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described, and pointed out in the claims.

The accompanying drawing is a view in longitudinal section illustrating my improvements.

1 represents the pot proper, having the two diameters of cylinder, and 2 is the plunger therein, made hollow, as shown. In the central upper portion of plunger 2 a two-part bearing 3 4 for the spherical end 5 of a connecting-rod 6 is secured. The upper member 3 of this hearing fits snugly in the cylindrical bore of the plunger, has an annular flange 7 to receive securing-screws 8, driven into the plunger, and is made with a central flared opening 9 to permit lateral movement of rod 6, which passes therethrough.

The lower member 4 of the bearing constitutes a cylindrical block fitting the cylindrical bore of the plunger and having a semispherical seat in its top for the end 5 of rod 6, and a strong coiled spring 11 is located in the lower portion of the plunger and exerts upward 1 pressure on block 4 to normally hold it up and against end 5.

l/Vith my improvements should the Valvegear be so misadjusted that the rod 6 descends too far or interferes with the downward motion of some parts of the valve-gear, which often happens, the lower member 4 of the bearing will be depressed, saving all the usual breakage of parts of the valve-gear, &c.

A great many slight changes might be made in the general form and arrangement of the parts described without departing from my invention, and hence I do not restrict myself to the precise details set forth, but consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with a dash-pot, a plunger therein and a plunger-rod, of a ball-andsocket connection between the plunger-rod and plunger, and a spring holding said connection in position and adapted to permit the plunger-rod to yield after the plunger has reached the end of its throw.

2. The combination with a dash-pot, of a plunger therein, a rod, an enlarged end on said rod, a two-member bearing in said plunger for said enlarged end of the rod, and a spring elastically holding one of said bearing members.

3. The combination with a dash-pot, of a plunger therein, a rod, a spherical end on said rod, a half-bearing for said spherical end secured to the piston, another half -bearing for said spherical end, and a spring pressing said last-mentioned half-bearing against the spherical end of the rod.

4. The combination with a dash-pot, of a plunger therein having a cylindrical bore, a connecting-rod having a spherical end, a halfbearing for said spherical end secured in the upper portion of the cylindrical bore of the plunger, a bloelt or half-hearing movable in In testimony whereof I have signed this the lower portion of the cylindrical bore and specification in the presence of two subserib- IO having a semispherieal seat for the spherical ing witnesses. end of the connecting-rod, and a spring between the bloek and the end of the plunger HENRY J. FISCHER.

to normally press the block upward and yet Witnesses:

permit it to be forced clown to compensate for R. B. HIOKMAN, nnsacl ustinent of parts. B. L. MArEs.

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