US695987A - Door closer and check. - Google Patents

Description

No. 695,987. Patented Mar. 25, I902 F. A. WINSLOW.

DOOR CLOSER AND CHECK.

(Application filed Apr. 5, 1901.} (.No Model.) 2 Sheets-Sheet l,

No. 695,987. Patented Mar. 25, I902.

F. A. WINSLOW.

DOOR CLOSER ANDOHEOK.

(Application filed Apr. 5, 1901A 2 Sheets Sheet 2.

(No Model.)

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llniTTnn STATES PATENT Urrrcn.

FRANCIS A. WINSLOW, or CHICAGO, ILLINOIS.

DOOR CLOSER AND CHECK.

SPECIFIGATION forming part of Letters Patent No. 695,987, dated March 25, 1902.

Serial No. 54,442. (No model.)

To aZZ whom, it may concern:

Beit known that I, FRANCIS A.W1NsLow, a citizen of the United States of America, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Door Closers and Checks, of which the following is a specification.

My invention relates to certain improvements in door-closers, the object being to provide means for closing the door, which will be concealed from view, leaving no unsightly projecting portions, and, further, to provide means for limiting the maximum velocity of the door in closing,so as to prevent slamming, suchmeans to be soinclosedand arranged with respect to the door as to be concealed and at the same time involve no objectionable variation in the form thereof.

To such end the invention consists in certain novel characteristics to be fully described below and definitely pointed out in the claims.

In the drawings, Figure 1 is a vertical median section of the door in line 1 1 of Fig. 2, the upper portion being broken away as in1- material to the invention. Fig. 2 is a vertical transverse section in the broken line 2 2 of Fig. 1. Fig. 3 is a horizontal section in the line 3 3 of Fig. 2. Fig. at is a view showing the same section as Fig. 3 with the door in its open position, and Fig. 5 is an elevation of the complete door.

Referring to these drawings, A represents a door-casing, and B a door, both beiugpreferably of hollow construction, such as is common in many of the cast-metal doors now in use. The door is secured to the casing by means of ordinary butt-hinges (Land the edge of the door at I) is cut away to provide access to the interior thereof. Opposite this opening the casing is perforated at a to receive the screw-threaded shank cl of a double eyebolt D, the threaded end of the shank being screwed into an upright T-iron E, which is a part of the framework to which the casingis secured. The eyebolt contains two eyes d 61 extending into the interior of the door and being eccentrically disposed with reference to the hinges. To the eye d is secured a link F, to the other end of which is fastened a coiled spring G, extending across within the interior of the hollow middle rail of the door and secured to a turnbuckle H, held against rotation by the walls of the door and provided,with a screw I,the head of which, i, is countersunk in the socket b in the free edge of the door. In the door here shown the upper portion is occupied by plate-glass J, the lower portion divided by means of a middle mullion K, separating two panelslc 7c. W'ithin the hollow interior of the mullion K a lever M is pivoted between its ends at m, preferably by means of a plate m, secured to the door by screws m m To the shorter upper end of the lever is. pivoted a link N, the opposite end of which is pivoted to the eye (I of the eyebolt D. In the lower hollow rail of the door is a horizontal cylinder 0, extending into the hinge-style and secured to the edge wall thereof by means of a screw 0. The cylinder is preferably open at its opposite end and contains a piston 0 on the end of a rod 0 pivoted to the end of the lever M at 0 The end of the rod N, which is pivoted to the eyebolt, is preferably curved toward thehingeaxis, as seen at n, so as to clear the edge of the door when the latter takes the position seen in Fig. at, and the link F is preferably curved in the opposite direction, so as to present its convex facef to the edge of the door and slide thereon to prevent the spring G from rubbing along that side as it is extended in the opening of the door. As the door swings from the closed to the open position the coiled spring is forcibly extended and the piston par tially withdrawn from the cylinder, to which movement little resistance is offered, because of the construction of the piston, as shown, which is the common construction in -pneu matic checks. When the door is released, the spring pulling eccentrically upon the casing draws the door shut, and the rod-and-lever connections between the eyebolt and the piston force the latter toward the closed end of the cylinder, compressing the air and checking the movement until sufficient air may escape. The lever-M multiplies the-range of movement of the piston, so as to give a much more satisfactory action and require less nicety of adjustment.

It should be noticed that all of the parts are wholly within the hollow door when the latter is closed and nothing is in sight to mar the ornamental or symmetrical appearance of the door. Furthermore, even when the door is open theparts exposed are so small and so inconspicuous that they are not objectionable. The abundance of space provided by this arrangement gives opportunity for much greater range of adjustment, as well as much more even working of the spring. The screw-headt' is easily accessible at the free edge of the door and aflfords means for adjusting the spring tension to the exact force desired.

I claim as new and desire to secure by Letters Patent 1. The combination with a casing, of a door hinged to the casing and provided with an internal recess to receive and allow the lateral movement of an approximately vertical lever, a lever centrally pivoted in said recess, a checking-cylinder within the door and having its plunger pivotally connected to one arm of the lever, and a link pivoted to the opposite arm of the lever, extending toward the hinged side of the door, and secured to the casing by a pivotal connection, substantially as described.

2. The combination with aside jamb or casing of a door hinged to the casing and provided with a recess extending from edge to edge thereof, a bearing secured to the casing eccentrically to the pintle-line of the hinges and in the plane of the door, a tension-adjusting screw working in the free edge of the door and extending inward therefrom toward the opposite edge, and an extensible Spring located in said recess and having one end connected to said bearing and the other attached to said screw by connections allowing independent rotation of the latter, substan-' tially as described.

3. The combination with a side jamb or casing, of a door hinged thereto and provided with a recess extending from edge to edge thereof, a bearing secured to the casing eccentrically to the pintle-line of the hinges, a link pivotally attached to said bearing and extending into said recess when the door is closed, a tension-adjusting screw seated in the opposite end of the recess with its head accessible at the doors free edge, an extensible spring located in said recess and having one end connected to the free end of said link and the other attached to said screw by a swivel connection, a checking-cylinder and its plunger within the door, a lever centrally pivoted within the door and having one end pivotally connected to said plunger, and a link pivotally connecting the opposite end of the lever to said bearing, substantially as described.

4:. The combination with a casing, of a door laterally hinged thereto and provided with an internal recess extending from edge to edge, of a bearing secured to the casing upon the hinged side of the door and when the door is closed projecting into said recess, a curved link pivoted to said bearing, a spring-coil having one end attached to the free end of the link, a nutsecured to the opposite end of the coil, a socket secured in the recess at the free side of the door, and a screw arranged to rotate without advance in said socket and extending inward in said recess and engaging said nut, substantially as described.

5. The combination with a door hingedto a casing and having the parts surrounding its panels hollow, of a check-cylinder located in the cavity on one side of a panel, a link similarly located upon the opposite side of the same panel and pivotally connected to the casing on the hinge side of the door, an approximately vertical centrally-pivoted lever lying in the cavity upon the third side of said panel and having its arms, respectively, pivotally connected to the link and the plunger of the check-cylinder,substantial1y as described.

In witness whereof I have hereunto set my hand at Chicago, in the county of Cook and State of Illinois, this 11th day of March, A. D. 1901.

"FRANCIS A. VVINSLOV.

XVitnesses:

CHAs. O. SHERVEY, S. Buss.

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