US445992A - Door-check - Google Patents

Description

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PATENT FREDERICK I.. IIABI.I..,"I`ON, OF RICHMOND, VIRGINIA.

DOOR-CHECK.

SPECIFICATION forming part of Letters Patent No. 445,992, dated February 10, 1891. Application tiledOetober SO, 1890. Serial No. 369,777. (No model.)

T0 all whom t may concern:

Be it known that I, FREDERICK L. IIABLIS- TON, a citizen of the United States, residing at Richmond, in the county of I-Ienrico and State 0f Virginia, have invented certain new and useful Improvements in Door-Cheeks; and I do hereby declare the following to be a f'ull, clear, and exact description of the inven tion, such as will enable others skilled in the art to which it appertains tomake and use the same.

.This invention relates to that class of devices by means of which doors of houses, cars, dsc., are held open; and its object is to provide means whereby the holding-bolt of the door may be operated by the action of the usual door knob or latch, and means whereby the door will be held from rattling against its fastenings, and at the same time be easily released therefrom.

To this end my invention consists in the construction and combination of the parts forminga door-cheek, hereinafter described and claimed, reference being had to the accompanying drawings, in whieh Figure I represents a vertical section of a portion of a door, showing 011e of my doorchecks in side elevation in the act of holding the door open and back near a partition. Fig. II represents a vertical section in the plane of the door in the region ofthe door-knob. Fig. III represents a vertical section through part of thethickness of the door in the region of the door-knob.

5 represents the bolt-plate secured permanently to the door G, and having two hasps 7, under which portions of the bolt 8 are fitted to slide. The bolt is shaped at its lower end with an offset 9, far enough away from the plate 5 to receive the catch 10, and a cushion 11 between the two. The upper side of the catch 10 and the lower end of the bolt S are both slanted, so that the bolt will easily ride up over the catch when the door is pushed back t'o the left, the bolt sliding vertically under the hasps 7. The catch 10 may be secured beth to the floor 12 and to the partition 13, or it might be secured to either one alone.

The cushion 11 is preferably made of elastic rubber and let into the catch 10 enough to be held in place thereby, and yet projecting enough from the face of the catch to serve as a cushion again st which the door will b u mp when suddenly swung back, thus preventing a disagreeable noise, and it may also be so arranged as to prevent the door-knob from striking the partition. This cushion has the mechanical effect in the present. combination of pressing the door forward and holding the bolt so closely in engagement with the catch as to prevent rattling. At the same time, when it is desirable to close the door the cushion will yield to a slight pressure against the door, thus permitting the door to move backward enough to set the bolt free, so that it may be easily raised out of engagement with the catch.

14 represents the door-knob provided with the usual square turn-shaft 15, to pass thron gh the door and operate the common door-bolt.

16 is a lever, which I provide with a square hole 17, to fit upon the said turn-shaft, and with a vertically-eloligated hole 18, to receive a wire 19, by which it is connected with the bolt S. This wire 19 is bent at its lower end, forming an arm 20, which passes through a slot in the upper end of the bolt S, and it is bent at its upper end into a loop 21 to engage the lever 16. IVhen the knob is so turned as to raise the lever 10, it draws the bolt S upward to disengage it from the catch; but when it is turned the other way from. its normal position, so as to carry the lever 16 downward, the lever plays freely in the wire loop 21, while the slot 18 passes the upper end of the said loop. 'lhus this device may be set so asrnot to be operated at all by turning the bolt in the usual way for service in fastening and unfastening the door, and yet be always ready for service on turning the bolt in the opposite way. The slot 1S is necessary to permit the said freedom of motion of the doorknob in one direction without affecting the bolt S, and I have provided loop 21 as a simple means of retaining the wire 1.) in engagement with lever 1G during such free movement of the lever. 1

While I prefer to provide a mortise 221 in the door in which the lever 1G may swing, and a vertical slot 23, in which the wire 10 may play vertically, the said mortise and slot being neatly covered in by a portion of the door, yet it is evident that the lever 1G might be placed outsideV of the escutcheon 24, at the IOO dotted line 25, the knob being withdrawn a little to admit the same, the wire 1f) also passing outside the door to connect the lever 1G with the bolt S. It is also evident that it would require only mechanical skill to attach loop 2l to a common door-latch so that it might also operate the bolt 8. It is further evident that the cushion ll might be secured to the door to engage the face of the catch l0 if the distances were maintained to hold the bolt and catch in engagement, as before described.

Some of the advantages of this device are that the bolt is operated by the usual means of fastening and unfastening the door without interfering with the normal functions of such fastenings. A simple and inexpensive device is provided to hold the door both from being slammed by a current of air and from rattling against its fastenings, and the cushion serves the double purpose of preventing the aforesaid rattling of the door by holding the fastenings closely engaged, and

yet by its elasticity permits the said fastenings to be readily disengaged, and it serves as a buffer to prevent the door being slammed backward, so as to strileitsknob or any other portion which might be injured. I

Having thus fully described my invention, what I believe 1o be new, anddesire to secure by Letters Patent, is the following claim:

The combination, in a door-check, of aboltplate 5, provided with hasps 7, and adapted to be secured to the door, a bolt S, provided with the offset 9, having a slanted lower end, a slot in its upper end, and fitted to slide vertically in the hasps 7, the catch 10, adapted to be secured to the floor or a partition, a cushion l1, interposed between the said catch and the door, and means for drawing the bolt, substantially as described.

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

FREDERICK L. HABLlST-ON.

Vitnesses: W. X. STEVENS, M. C. HILLYARD.

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