US623873A

US623873A - Damper

Info

Publication number: US623873A
Authority: US
Publication date: 1899-04-25
Anticipated expiration: 1916-04-25

Description

No. 623,873-, Patented Apr. 25, |899.-

' A. BDRDEN.

DAMPER.

(Application led Aug. 17, 1898,) (No Model.)

STATES Nirn ArnNr Q' Fries.

DAM PER.

SPECIFICATION forming part of Letters Patent No. 623,873, dated April 25, 1899.

Application filed'August 17, 1898. Serial No. 688,834. (No model.)

To LZL whom, t may concern:

Ile it known that I, ALBERT BORDEN, of the city of St. Louis, State of Missouri, have invented certainV new and useful Improvements in Dampers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part thereof.

My invention relates to dampers; and it consists of the novel construction, combination, and arrangement of parts hereinafter shown, described, and claimed.

Figure 1 is a vertical sectional view of a damper of my improved construction, the same being shown in position in a i'lue or airconveying pipe. Fig. 2 is an enlarged horizontal sectional view taken approximately on the line 2 2 of Fig. 1. Fig. 3 is a horizontal sectional view taken approximately on the line 3 3 of Fig. 1.

Referring by numerals to the accompanying drawings, 1 indicates a suitable rectangular casing that is located at any desired point in a llueor air-conveying pipe 2. Formed in the center of the top of the casing 1 is a small aperture 3, and formed in the center of the bottom of said casing isan opening 4, the same being closed by a plate 5, through the center of which plate is formed an aperture (5, and rigidly secured to the under side of the plate 5 in any suitable manner is a cap 7. Rigidly held upon top of the casing 1 is a vertically-arranged tubular valve-casing 8, in which is formed a chamber 9, and in said chamber J operates a piston 10. A tubular connection 11 leads into the casing 8 at a' point above the piston 10, and a tubular connection 12 leads into the chamber 9 below said piston 10.

The damper properof myimproved device comprises the tubular body 13, with which is formed integral the oppositely-arranged outwardly-extending wings or plates 14, and said plates 14, together with the body 13, are of such size as that they will snugly iit within the casing 1, and when turned transversely therein will cut off and close the passage therethrough. Formed in the top of the body 13 is a vertical bore 15, that coincides with the aperture 3 in the top of the casing 1, and

. formed in the lower end of the body 13 is a vertical bore 1G, that coincides with the aperture-6 in the plate 5. Arranged for vertical movement through the bore 1G and the aperture is a short rod 17, the same having formed in its periphery a spirally-arranged groove 1S, and also formed in the face of said rod 17 is the vertically-arranged groove 19, into which extends a feather 20, that is carried by the plate 5. Passing through the lower end of the tubular body 13 is a pin or bolt 21, the inner end of which projects into the spirally-arran ged groove 18. Rigidly connected to the upper end of the rod 17 is the lower end of a connecting-rod 22, the upper end of said rod 22 being sea-ted in the piston 10.

My improved damper is operated by discharging liquid under pressure through the tubular connection 11 on top of the piston 10, which forces said piston downwardly, or discharging liquid under pressure through the tubular connection 12 beneath said piston 10,

which moves said piston upwardly. lihenthe connecting-rod 22 moves downwardly with the piston, the rod 17 moves downwardly through the bore 16 and through the aperture 6 into the chamber within the cap 7, and said rod 17 does not rotate, owing to the fact that the feather 2O engages in the groove 19 formed in said rod 17. As the rod 17 moves downwardly and the point of the pin or bolt 21 engages in the groove formed in said rod 17 the body 13 and wings 14 of the damper will be partially rotated within the casing 1, which partial rotation will bring the damper into a closed position, as shown by dotted lines in Fig. 3, thus cutting off `all passage through said casing 1, and consequently through the flue or air-pipe in which said casing is located. Vhen the

rods

22 and 17 are elevated, the damper rotates in a reverse direction and is turned parallel with the side walls of the casing 1, and when in this position there is a free passage through the casing 1.

A damper of my improved construction is sim ple, inexpensive, easily operated, will not easily get out of order', and is very effective when in use in any flue or air-conveying pipe.

I claiin- 1. In a device of the class described, a casing, a vertically-arranged damper within said casing, a rod passing through the center of said damper, in the periphery of which rod is formed a spirally-arranged groove, a pin IOO passing from the damper into said groove, means Whereby the rod is held against rotation, and suitable means for imparting vertical movement to said rod, substantially as speeiied.

2. In a devieeof the elassdeseribed, a suitable easing, a vertically-arranged damper arranged for rotation within said easing, a rod passing through the damper and casing, in the periphery of which rod is formed aspirally-arranged groove, a pin passing through the body of said damper, the point of which pin engages in the spiral groove, a feather carried by the under side of the easing for engaging in a vertical groove formed in the rod, a valve-easing carried by the top of the firstmentioned easing, a piston operating within said valve-easing, to which piston is eonnected the upper end of a damper-rod, and suitable tubular Connections whereby fluid under pressure is discharged above or below the piston, substantially as speeilied.

3. In a damper, a suitable easing, atubular bod yarran ged for rotation Within said easing, oppositely-arranged Wings formed integral with said tubular body, a rod passing vertically through said tubular body, in the periphery of which rod is formed a spirallyarranged groove and a vertical groove, a pin passing through the lower portion of the tubular body, the point of which pin engages in the spirally-arran ged groove,a feather carried by the bottom of the easing for engaging in the vertically-arranged groove, and means Carried by the top of the damper-casing for imparting vertical movement to the rod, substantially as speoied.

In testimony whereof I affix my signature in presence of two witnesses.

ALBERT BORDEN.

fitnessesr M. P. SMITH, JOHN C. I-IIGDoN.