US723432A - Means for closing double-action or swing doors. - Google Patents

Description

No. 723,432. PATENTED MAR. '24, 1903 F. W. ADAMS, 4

' MEANS FOR CLOSING DOUBLE ACTION 0R SWING DOORS.

APPLICATION FILED JUNE 13, 1902.

no MODEL. a sums-sum: 1.

No.723,4s2.- PATENTED'MAR.24,1903.-

P. W. ADAMS.

MEANS FOR CLOSING DOUBLE ACTION 0R SWING DOORS.

APPLICATION FILED JUNE 13, 1902.

H0 MODEL. I 3 SHEETS-SHEET 2.

3 2 y; & 5 & v 1

PATENTED MAR. 24, 1903.

' I P. w; ADAMS.

MEANS FOR CLOSING DOUBLE ACTION 0R SWING DOORS.

APPLICATION IILED JUNE 13, 1902.

I0 MODEL.

UNITE STATES PATENT OFFICE. I

FREDERICK W IL LIA M ADAMS, OF ANERLEY, ENGLAND.

MEANS FOR CLOSlNG-DOUBLE-ACTION OR SWING DOORS.

SPECIFICATION forming partof Letters Patent No. 723,432, dated March 24, 1903.

Application filed June 13, 1902. Serial No. 111,476. (No model.) I

To all whom it may concern:

Be it known that I, FREDERICK WILLIAM ADAMS, a subject of the King of Great Britain, residing at S Lansdowne Terrace, Worbeck road,Aner1ey,Surrey,En gland, have invented a new and useful Improved Means for Closing Double-Action or Swing Doors, of which the following is a specification.

This invention relates to improved means for closing double-action or swing doors. In devices for this purpose as. heretofore made it has been necessary to recess the door-frame and the door to receive the said device, thus necessitating that the door and door-frame shall be specially prepared to receive the device.

Now my invention has for its object to provide a device for the purpose which merely requires to be applied to the outside of the door and door-frame at the top thereof. To this end I make use of a lever which is arranged so that it can turn upon either one of two pivots, according to the direction in which the door is opened, the said lever in its movement in either direction compressing a spring which returns the door toits normal or central position on being released.'

To enable the invention to befully understood, I will describe it by reference'to the accompanying drawings, in which,

Figure 1 is a side elevation of one form of double-action door-closing mechanism made according to the invention. Fig. 2 is a plan view thereof. Figs. 3 and 4: are views simi lar to Fig. 2, but showing the door opened in the two directions, respectively.. Fig. 5 is a" sectional view of a detail hereinafter described. Fig. 6 is an elevation; of' another form of my door-closing mechanism. ;Fig. 7 is a plan view of the same. Fig. Sis a side elevation of a further modification of my invention. Fig. 9 is a plan view thereof; and Figs. 10 and 11 are views similar to Fig. 9, but showing the door opened in the two directions, respectively. Fig. 12 is a plan view of a detail hereinafter described.

Similar letters 'of reference refer to the same or corresponding parts in all the figures.

Referring first to the arrangement illustrated in Figs. 1 to 4, A is the door-frame, and B is the door, the said door being pivoted 'lines.

to the door-frame, as indicated at a, in the usual manner. I) is the door-closing lever, this lever being provided at one end with a slide b, which moves upon a guide b fixed in brackets 19 b screwed to the door B. The slide 1) can be provided with internal packing, so that it moves easily and without noise upon the guide b The other end of the leverb is'pivoted at c to one end of a link 0, the other end of which is hinged at c to a bracket 0 screwedupon the door-frame A. The lever b is provided with a box or casing d, containing (see the section shown in Fig. 5) a spring (1',

one end of which is secured to the said casing at d? and the other end to a spindle d which extends through the said box d and lever b and is secured'at its end, which projects from the upper end of the box, to one end of a lover .or link d, the other end of which is pivoted to one end ofa link (1 whose other end is pivoted at d to the bracket 0 e is a finger which projects from the upper end of thebox d and is adapted when the door is in its normal or closed position (shown in Figs. 1 and 2) to bear against the end of the link 0 at or near the center of its pivot 0 With this arrangement when the door is turned in the direction shown in Fig. 3 the lever b turns upon 'the pivot c as its center, this movement coiling up the spring by the motion of the lever d1 and link (1 which are moved relatively with the box (1 from the position shown in broken lines to the position shown in full When, therefore, the door is released, it moves back to its normal position under the'action of the spring, being brought to rest at its normal position-that is to say, in the plane of the door-frameby the stop c", which is formed uponthe under side of the link c, and which stop comes into contact with the bracket 0 as clearly shown in Figs. 1, 2, v

and 4:. When the door is opened in the other direction, as shown in Fig. 4:, the lever b turns upon the pivot c as a center, the spring d again being coiled up by the movement of the links d and 61 which move from the position indicated in broken linesto that indicated in the full lines in the figure, so as to produce relative motion between the box and the spring in a similar manner to that which occurs when the door is opened in the direction shown in Fig. 3. When the door is released, it is brought back to its normal position by the spring and is again held closed in the plane of the door-frame by the finger e, which comes into contact with the end of the link 6', as above described and as shown in Figs. 2 and 3. Suitable means are provided for adjusting the tension of the spring d, and in the drawings I have shown the spindle (1 provided on its lower end outside the box (1 with a toothed disk (1?, by means of which the said spindle can be turned with the assistance of a suitable tool. The upper projecting end of the spindle d is squared and enters a correspondinglyshaped recess in the link (1 which holds it in the position to which it has been adjusted. With this arrangement it will be clear that to adjust the tension of the spring it is merely necessary to remove the link (Z turn the spindle to the required extent, and replace the said link, which, as above mentioned, will hold the spindle in the position to which it has been adjusted.

The arrangement shown in Figs. 6 and 7 is similar to that above described; but the spring (1' is shown as a helical spring instead of as a spiral spring, the said helical spring d being inclosed in the cylindrical casing d, jointed upon the lever b, and being compressed by a piston f, which bears against its outer end and is connected by a rod f to the bracket 0 upon the door-frame. It will easily be seen that this spring is compressed on turning the door in either direction, the action being similar to that above described.

In the arrangement shown in Figs. 8 to 12 the same principle underlies the construction; but two springs are here employed in lieu of one. The object of employing two springs is to enable a greater closing force to be applied to the door in one direction than in the other-for example, to close it against a strong wind. The lever 19 is pivoted at its outer end to one end of an adjustable link g, the other end of which is pivoted to a bracket h,- fixed to the door B. The other end of the lever 19 is pivoted, in the same way as in the two previously-described modifications, to one end of a link 0, the other end of which is pivoted to a bracket 0 screwed upon the doorframe A. The link 0 is provided with two boxes or casings ij, each containing a spring 2" and j, respectively, the said springs being mounted upon spindles d and j and being provided with externally notched or toothed disks d d for their adjustment in the manner above described. In the case of the spindle i this also forms the pivot upon which the link a is hinged to the door-frame A, the said spindle being fixed to the said bracket. The spindle j is provided at its lower end, which projects from its boxj, with a finger 70, which bears against a roller-stud Z upon the lever b, a second projection oi stud n being also provided upon the said lever b for engaging a stop m, projecting from the under side of the link a. With this arrangement when the door is opened in the direction indicated in Fig. 10 the lever 1) turns upon the spindle i as a center, the projections or stops m and it making the said lever rigid with the link 0', and this movement winds up the spring 6', which returns the door to its normal position when it is released, the said door being stopped in the plane of the door-frame in the manner previously described. When the door is turned in the other direction-that is to say, in thedirection indicated in Fig. 1lit turns upon the pivot c as its center, whereby the roller-stud Z, which also turns about the same center, rotates the finger 7c, and thereby coils up the spring j. On the door being released the coiled spring returns it to its normal position,

the stops m and n retaining it in its centralpositionthat is to say, in the plane of the door-frame.

It will be noticed that in all the above-described constructions the power applied to the door is increased as the door closes, this being effected by the variation of leverage through which the spring acts. It will also be obvious that I can use the slide 1) and guide 5 shown in the two first-described modi fications in the arrangement illustrated in Figs. 8 to 11, and similarly the adjustable link g there shown in the former constructions.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- 1. In a door-closing apparatus, the combination with a door-casing, of a door hinged therein so as to swing through said casing in both directions, a closing-lever having one end connected with the door and having two separated pivotal connections with the doorcasing and spring mechanism connected with said lever and arranged to force the portion thereof between said pivotal connections toward the door-casing, substantially as described.

2. In a closing device for a double-swinging door, the combination with a device for attachment to the door-casing, of a lever having one end provided with means for attaching it to the door, said lever being provided adjacent to its other end with two separated pivotal connections with said device on the door-casing and a spring mechanism connected to said lever and constructed to force the portion thereof between said pivotal connections toward the door-casing, substantially as described.

3. In a closing device for a double-swinging door the combination with a lever having one end provided with means for attaching it to the door, a link pivoted to the other end of said lever, extending toward the door-engaging end of the lever and pivoted to the casing, a spring connected to said lever and adapted to force the portion adjacent to said link toward the door-casing and a stop on the door-casing adjacent to the pivotal connection of the link therewith for engaging a part connected with said lever when the door is moved in one direction, substantially as described. 1

4. In a closing device for double-swinging doors, the combination with a lever provided at one end with means for connecting it with the door, a link pivoted to the other end of said lever, said link extending toward the door-engaging end of said lever and pivotally connected to the door-casing, a stop on the door-casin g adjacent to the pivotal connection of said link therewith adapted to engage a part connected with the lever to form a fulcrum for the lever when the door is moved in one direction and a spring connection between the door-casing and said lever engaging the lever between said fulcrum and its pivotal connection with said link, and a stop on the door-casing for engaging said lever adjacent to its pivotal connection with said link, substantially as described.

5. In a closing device for a double-swinging door, the combination with a lever prodoor-casing and adjusting mechanism for regulating the tension of said spring, substantially as described.

FREDERICK WILLIAM ADAMS.

Witnesses:

J OHN E. BOUSFIELD, O. G; REDFERN.

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