US650534A - Liquid door-check. - Google Patents

Description

No. 650,534 Patented m 29, I900:

W. K. HENRY. I

LIQUID DOOR -CHECI(..

Application filed July 27, 1899.) (No Model.) 3 Sheets-8heet l.

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INVENTOR 2 A Home] ITNESSES Patented May 29, I900.

W. K'. HENRY.

LIQUID 'DOOR CHECK.

(Application filed Jul v No. 650,534.

3 Sheets-Sheet 2 '(No Model.)

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INVENTOR I WITNESSES No. 650,534. Patented May 29, I900. W. K. HENRY. LIQUID DOOR CHECK. (Application filed July 27, 1899.) (lo Mndel.) 3 Sheets-sheaf 3.

[N VEN T OR Attorney WITNESSES UNITED STATES,

P TENT @rnrbsi.

\VILLIAM K. HENRY, OF NE\V BRITAIN, CONNECTICUT, ASSIGNOR TO THE P. d: F. CORBIN, OF SAME PLACE.

LIQUID DOOIR'I-CHECK.

SPECIFICATION forming part of Letters Patent No. 650,534, dated May 29, 1900. Application filed July 27, 1899. dcrial No. 725,318. (No model.)

To all whom, it may concern.-

Be it known that 1, WILLIAM K. HENRY, of New Britain,in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Liquid Door Closers and Checks; 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 improvement in liquid door closers and checks, the object being to provide a combined closer and check which can without any change or alteration whatever and without any change of adjustment be used on either a right or left hand door or on a double-acting door; and it consists in the parts and combinations of parts, as will be more fully described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in front elevation of my door-check, showing a portion of the door and its casing. Fig. 2 isaplan view of same. Fig. 3 is a view in longitudinal section of the check. Fig. 4

is a view showing the internal mechanism removed from the casing, the parts being in proper relative positions. Fig. 5 is a view in section on the line a: a: of Fig. 3. Fig. 6 is a View in section of the casing, showing the rib on the inner face of the spring-cylinder; and Fig. 7 is a detached View of the piston.

A represents the casing, divided interiorly by the partition B, which latter is provided centrally with an opening for the passage of the spindleC and with an integral gland C and sleeve D, the gland projecting upwardly into the spring-chamber E and the sleeve D projecting downwardly into the piston-cham- 0 her F. This partition B is screw-threaded externally to engage threads on the inner face of the casing A and when secured in place elfectually prevents the passage of liquid around the outer edge of the partition. The lower end of the casing is closed by an integral head, and the upper end thereof is closed by a removable cap G, which latter has a central opening for the passage of the spindle C. This spindle 0 passes the cap G and through the spring-chamber E and gland 0 into piston-chamber F and is provided at its lower end with a pintle a, carrying the antifrictionroller a, which latter rests in the double-inclined slot H in the piston I. This piston is provided with a central cavity open at the top, in which the lower end of the spindle C rests, and the double-inclined slot H opens into this recess, thus permitting the spindle to have a free rotary movement and the antifriction-roller carried by the spindle to freely 6o traverse throughout the length of the doubleinclined slot. Then the check is used on either a right or left hand door, the antifriction-roller would simply move through one inclined section of the slot, but in a doubleacting door the roller would move in both sections of the slot. The piston is down or adjacent to the closed end of the casing when the door is closed, and when in this position the antifriction-roller rests in the upper portion of the slot H or at the juncture of the two downwardly-inclined sections. Hence it will be seen that the spindle is free to be turned either to the right or the left and when turned in either direction positively draws the piston toward the partition B. The piston is prevented from turning in its chamber or cylinder by the spline d, which latter is seated in a recess in the casing and enters a recess or groove in the piston. The spindle C passes through the sleeve D and gland C, the latter carrying a suitable packing e, yieldingly held in place by the spring f, the latter being maintained under tension by the nut. g, screwed into the upper 85 end of gland. WVith this construction it will be seen that all leakage of oil up around the spindle is prevented, and as the enlarged head it of the spindle rests under and in contact with the lower end of the sleeve any 0 pressure of oil above the piston tends to force the head more tightly against the sleeve. This construction, together with the packing in the gland C, prevents the possibility of the passage of any liquid upwardly into the 5 spring-chamber.

Located within the spring-chamber is the clutch-section J. This section J consists of a block having a central bore for the free passage of the spindle and recessed on its un- :00 der side to fit over and on the upper end of the gland C. This block is provided at its lower end with an outwardly-projectin g flange t', having an upwardly-projecting shoulder j, which latter is engaged by one side of a rib j, integral with or secured to the inner face of the spring-chamber. The block or clutchsectionJ is also provided with a second shoulderj located in a plane slightly above the shoulder j and nearer the center of the block, a space being formed between the two shoulders for the lower end of the spiral wire spring K. The lower end of the spring terminates in a hook which enters an opening in the flange i of the section or block J. This spring extends approximately the length of the spring-chamber and is secured at its upper end to the flange Z of the upper clutchsection or block J which latter is provided at its outer edge with a depending shoulder m, adapted to engage the opposite side of rib 2:) j in the chamber and is provided at a point clutch-section J nearer its center with a second shoulder m adapted to be engaged by the intermediate Clutch-section J 2 rests on the nut L, secured to the spindle O, and the nut in turn rests on and secures the clutchsection J in place, the latter being secured on an angular section of the spindle, so as to turn with the spindle, while the clutch-sections J and J are free to turn on the spindle. Clutch-section J a is provided with a laterallyprojecting shoulder m which rests between the shoulder j on the lower clutch-section and the depending shoulder in of the upper clutch-section. Hence it will be seen that when the spindle G is turned in one direction the cam or projection m on clutch-section J engages the projection on one clutchsection J or J 2 and turns same. As shown in Fig. 4:, the shoulders m and 9' on the clutchsections J 2 and J rest on opposite sides of and engage the projection or cam m on the intermediate clutch-section J and said clutchsections J and J 2 are so engaged by the rib j in the spring-chamber as to prevent the shoulders m and 7' from moving toward the cam m Hence it will be seen that when the cam m is turned by the rotation of the spindle 0 one of the clutch-sections remains stationary while the other turns with the spindle, and by turning the spindle in the opposite direction the clutch-section that was formerly held stationary moves while the other is held stationary.

Thus it will be seen that the check can be applied to either a right or left hand door or to a double-acting door without any manipulation whatever of the check or any parts thereof, the apparatus being at all times in condition for attachment to any of the forms of doors above mentioned.

The lower end of thecheck is provided with a vent-tube N, suitably secured thereon and passing through a centrally-located opening in the lower end of the piston. This venttube is provided at a point near the lower end of the cylinder with an opening 0, which can be more or less closed by the screw-valve 0', and the head of the piston is provided with ball or other valves which open and permit the free passage of liquid to the lower part of the cylinder while the piston is being raised by the opening of the door, but close and retard the movement of the liquid while the piston is descending.

I make no claim to the vent-tube and valves, as the same are shown and described in application Serial No. 703,377, filed by O. 0. Case January 25, 1899.

The upper end of the spindle is angular in cross-section for the attachment of the jointed links 0, which connect the spindle to the doorcasing and may be of any approved form and construction.

It is evident that many slight changes might be resorted to in the relative arrangement of parts herein shown and described withoutdeparting from the spiritand scope of my invention. Hence I would have it understood that I do not wish to confine myselfto the exact construction herein shown and described; but,

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

1. The combination with a casing divided into two compartments and a spindle passing through one compartment into the other, of a double-acting-spring located within one of said compartments and connected at its ends to the spindle, and a double-acting piston located in the other compartment and actuated by said spindle.

2. The combination with a casing divided into two compartments and a spindle passing through one compartment and terminating at one end in the other, of apiston located in one compartment adjacent to the inner end of the spindle and provided with a double-inclined groove engaged by a projection on the spindle, a double-acting spring located within the other compartment and means for connecting both ends of the spring to the casing and to the spindle, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

\VILLIAM K. HENRY.

Witnesses:

ALBERT N. ABBE, LAUREN M. BANCROFT.

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