US279930A

US279930A - Key-fastener

Info

Publication number: US279930A
Authority: US
Publication date: 1883-06-26
Anticipated expiration: 1900-06-26

Description

(No Model.)

W. H. FLINN.

. KEY FASTENER. No. 279,930. Patented June 26, 1883 Fig.1. I

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1o. gitudinal section, of a key-fastener of my im- U ITE STATES a PATENT OFFICE;

WILLIAM H. FLINN, or NASHUA, new HAMPSHIRE.

KEY-FASTENER.

SPEGIFIdATION forming part of Letters Patent No. 279,930, dated June 26, 1883.

Application filed March 2. 1883. (NomodcL) To all whom, it may c0n0ern.-' Be it known that I, WILLIAM H. FLINN, of Nashua, in the county of Hillsborough, of the State of New Hampshire, have invented a new and useful Improvement in Key-Fasteners for DoorLocks and I do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which-- Figure 1 is a frontview, and Fig. 2 a 1011- ,proved kind applied to the key-hole ofa door, such door being supposed to be furnished with a mortise-lock to its keyhole. Fig. 3 is a rear view, and Fig. 4 an edge view, of the key-fastener.

The nature of my invention I have defined or attempted to define in the claim hereinafter presented.

This key-fastener is a vibratory one, it being near one end of it pivoted to the door, so

as to be capable of being swung either to 'the right or left relatively to' the key-hole. It is shown in the drawings at A, and as fixed to the door B by means of a screw, 0,, the part a of whose head, which is within the fastener, is a conic frustum. The body of the fastener is a fiat plate of metal, shaped as shown, and having within it a key-hole, 12, formed like that of the door, and, besides, the fastener has in it, leading laterally out of its key-hole, a notch,

c, to receive the flat or prismatic shank of the gers of a person are to be applied to move the fastener laterally relatively to the key;

The socket e, for reception of the conical head of the screw, is not conical, but cylindrical, the head being loose therein or not touching it, except at or near the lesser base of itsconieal part, or where the head is joined to the shank of the screw.

There projects from the rear part of the fastener, concentrically with its piyot-hole f, an annular flange, g, from whose edge there are extended three or other suitable number of teeth or spurs, 71. On the pivotal screw being firmly set up, the annular flange will be crowded more or less into the wood of the door, so as to form therein a corresponding circular groove, which, with the flange, will operate to hold the fastener with sufficient friction when in either of its extreme positions. On the screw being set up, as described, so as to crowd the spurs into the wood', and the annularfiange more or less therein, the key-hole of the fastener being directly in front of that of the door, or in position forthe introduction of the key into or its removal from such key-hole of the door, the key-fastener is to be turned laterally with force to cause each of the teeth or spurs to cut into the wood in the arc of a circle. From this it will be seen that the spurs and the cuts thus made by them answer as .means of arresting the fastener or stopping it in-its proper positi on relatively to the key-hole of the door for the insertion of the key therein through the fastener. After such insertion and the bolt of the lock may have been thrown forward by the key, the fastener is to be turned laterally to cause the keyshank to enter the notch, whereby the key will be prevented frombeing revolved by nippers or other means applied to it.

The fastener may be somewhat differently formed from that shown and described, so long as it may embrace the principle or principles of my invention.

I make no claim to a lock-escutcheon made as represented in the United States Patent No. 269, 744, which consists of two circular plates pivoted together and provided with key-holes and slots, &c., such being for use with a lock to be fixed to the outer side of a door, whereas my key-fastener is to be applied to and to work directly against a door, and for use with a mortise-lock adapted thereto, and it is in one piece, and has an annular flange to enter the door, whereas there is nothing of the kind to either of the eseutcheon-plates of the said patent, and nothing to operate in like manner, and no spur or spurs to extend from the plate into the door, and to be used for cutting nular flange or bearing and one or more spurs, a groove or grooves in the latter, to determine as described, projecting from the latter, all beivith the said spur or spurs the extent of lat ing arranged substantially as set forth.

eral movement of the fastener. WILLIAM HENRY FLINN. 5 I clain1 \Vitnesses:

The vibratory key-fastener provided with A. L. SEOKETT, the key-hole and its notch, and with the an- Tl. S. SARGENT.