US1654995A - Door opening and closing device - Google Patents

Description

Jan. 3, 1928.

C. A. PURVIS 4 DOOR OPENING AND CLOSING DEVICE Filed Feb. 25. 1926 Patented Jan. 3, 1928.

. 1,654,995 H'UNITED STATES PATENT OFFICE.

CHARLES ADIS PURVIS, 0F MOUND CITY, KANSAS, ASSIGNOR T0 THE URVIS MANTI- FACTURING COMPANY, OF MOUND CITY, KANSAS, A CORPORATION 0F KANSAS.

DOOR OPENING AND CLOSING DVICE.

Application filed February 23, 1926. Serial No. 89,847.

. This invention relates to double-door op erating mechanism of the general typedisclosed in my Patent No. 1,527,077, February 17, 1925, in which provision is 'made for tripping a fastening mechanism by a pull-cord, to permit of automatic closing of the doors, one of the objects of the present invention being to provide a construction whereby one desiring to effect the closing of the doors, can accomplish such object by pressing a particular door more widely open, and thereby trip the fastening mechanism, performing this operation with his elbow if it happens his hands are both employed in holding articles or packages, as frequently is the case in the placement of articles of merchandise in rear double-door delivery automobiles or horse drawn vehicles.

With this general object in view, and others pertaining to simplicity, efficiency and economy of construction, the invention consists in certain novel and useful. features of construction and combinations of parts, as hereinafter described and claimed; and in order that it may be fully understood, reference is to be had to 'the accompanying drawing, in which Figure 1 is a horizontal section of a construction embodying the invention, taken in the plane of the dotted line I--I of Figure 3, and showing the doors in closed position.

Figure 2is a similar view, but showing the doors in open position.

Figure 3 is a front view of the construction as disclosed by Figure 2.

Figure 4 is an enlarged section on the dotted line IV-IV of Figure 2.

Figure 5 is a section on the line V-V of Figure 4.

Figure 6 is an enlarged section on the line VI-Vlf of Figure 1.

Referring to the ldrawing in detail, 1 indicates the framing for a pair of double-doors 42 and 3, hinged as customary at their outer edges, the door 3 being provided with a handle 4, to be grasped when it is desired to open the doors.

Bolted, as shown, or lotherwise-rigidly secured to the inner side of door 2 near the hinged edge and upper margin of said door, is a bracket 5, and bolted to said bracket and abutting the door so as to stand as an inwardly-projecting rigid arm thereof, is `an angle iron arm 6, provided near its inner or free'end with a depending latch tongue 7,

and outward of said tongue a vertical, -inverted bolt 8, is threaded in thevarm.- A brace 9 for said arm, is mounted .at one end upon said bolt and at the other end is se- -of angularly-disposed hooks 15 and 16, the

shank of hook -16 being of bolt form and extending through lthe shank of hook 15. A nut 17 engages the shank of hook 16 and by adjustment is utilized to clamp the arms of the angle bars 13 and 14 rigidly together to produce an arm of the required length.

The arm composed of bars 13 and 14,.has a short longitudinal slot 18, pivotally receiving the bolt 8 between the head thereof and arm 9 the arm 13-14 having a slight longitudinal play in the opening movement of the doors, on the bolt. At the adjacent extremity of bar 13 there is formed a notch 19, and the said bar has a bevelled edge 20 leading to said notch.

A retractile spring 21 is secured at one end to the opposite end of bracket 11 from the pivot bolt 12, and a link rod 22 connects the other end of said spring with the bolt 8, a nut 23 bein engaged withV said bolt between the lin rod 22 and the brace 9, to hold the latter atly upon the arm 6.

When the doors are closed the parts stand in the position shown by Figure 1, the spring 21 at such time being under suiicient tension to hold the doors closed. When handle 4- is grasped and an 'outward pullapplied thereon` thetension on the spring is increased and utilizes the leverage of the arm `6 to cause the door 2 to start on its Aoutward swing. As the swinging movement continues,- thearm 13-14: by pulling on the boltl 8, takes up the burden of transmitting powerfrom door 3 to door 2 to continue the opening movement ilo the bevelled end 20, and the pull of the spring, as said tongue registers with notch 19, snaps the former into the latter and thus locks the arms in alinement, it beingy noted that because said arms are overlappin and of angular type, it will be impossibley 1f the doors are opened with too much force, for the arms to move beyond a longitudinally alined relationship.

For relatively small doors, such as found on delivery wagons and the like, wind pressure will not ordinarily be suiiicient to overcome the resistance of spring 21 vand thus impart right-hand movement to arm 13-14 sufieient to disengage it from the locking tongue 7, and hence no auxiliary spring, such as used in my prior patented construction, is necessary or desirable. i/Vhen the operator desires to close the doors, however, he can merely apply outward pressure with his elbow on the right-hand door, to swing it enough to effect disengagement between the notch 19 and tongue 7. As the outward pressure on said door 3 is relaxed, the reaction of the spring by applying force at an angle to the alined arms 6 and 13-14, breaks the joint between said arms and eects simultaneous closing movement of both doors.

From the above description it will be apparent that I have produced a double-doorU operating mechanism embodying the features of advantage set forth as desirable in the statement of the objects of the invention, and which is obviously susceptible of modification in minor particulars without .departing from the principle of construction involved or sacrificing any of the advantages of the appended claims, it being noted in this connection that not only does the construction lack the pull-cord and auxiliary door-closing spring of the prior patent hereinbefore identified, but it also shows the fastener or latch mechanism transposed, in that the tongue is on the short rigid arm 6 and the notch on the long arm, instead of having the notch in the short arm and a separate latch piece on, the long arm, as shown by the aforesaid patent.l It will be also understood that the present improvement` while peculiarly appropriate for small double-doors, may be employed .on inside or,

outside doors for buildings.

I claim 1. The combination of a pairy of doors hinged at their outer edges, a rigid arm projecting inwardly from one of thek doors at the hinged edge thereof, an arm extending obliquely from the inner end of the rigid arm toward the hinged edge of the other door and having a pivotal relation with and at the inner side of the latter and having a pivotal and longitudinal play relation with said rigid arm, tensioned retractile means between the last-named door at a point between its free edge and its point of pivotal relation with said oblique arm, and the inner end of said rigid arm; one of sai-d armshaving a beveled end and a notch, and the other arm a tongue adapted during the opening movement of the doors to engage and ride over said beveled end until the two arms are alined, and said retractile means being adapted as the force applied to open the doors is removed, to react and effect engagement between said tongue and notch to fasten the arms alined and the doors against closing movement.

2. The combination with a pair of doors hinged aty their outer edges, an arm projecting rigidly inward from one of said doors near the hinged edge thereof,` a vertical pivot bolt carried by said arm, an arm fitting flatly against the inner end of the firstnamed arm and having a longitudinal slot engaging said pivot bolt, and extending therefrom obliquely toward the hinged edge of the other door, a bracket secured to the inner side of the last-named door at a point intermediate its width and pivoted to the adjacent end of the oblique arm, and a retractile means connected at one end to said pivot bolt and extending divergingly tov ward the other door with respect to said oblique arm, and connected to said bracket between the adjacent end of said obliquean arm composed of a pair of angle irons" one nested in the reentrant angle of other, hooks exten-ding at intersecting angl 'and fitting Haty against and crosswisellgtif the outer sides of the respective arms of the outer angle iron, the shank of one hook being threaded and extending through the sha-nk of the other hook, the hook terminals fitting over the free edges of the arms of both angle irons and engaging the outer edges of the respective arms of the inner angle irons, and a nut engaging the threaded shank and the outer side of the other shank to cause the hooks to clamp the angle irons firmly together.

In witness whereof il hereunto aix my signature.

, canas anis runvrs.

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