US63980A - Improvement in attaching knobs to door-latches - Google Patents

Description

taken in connection with the accompanying ment.

WILLIAM E. ANDEEWs, CE NEW HAVEN, CONNECTICUT.

IMPROVEMENT IN ATTACHING KNOBS TO -DOORLATCHES.

Specification forming part of Letters Patent No. 63,980, dated April 23, 1867.

To all 'whom it may concern:

Be it known that I, W. H. ANDREWS, of New Havenin the county of New Haven and State of Connecticut, have invented anew Improveinent in Knob-Latches for Doors, Ste.; and I do hereby declare'the following, when drawings and the letters of reference marked thereon, to be a full, clear, and exact descriptionof the same, and Which said drawings constitute part of this specification, and rep- Figure 1, a perspective view of the spindle and knob, ,and in Fig. 2 a longitudinal central section, as attached to a door, the knob upon the left showing the common arrangement, and upon the right my improve- This invention relates to the manner of securing the knob and spindle together and to the door; and consists, rst, in the introduction of a at plate beneath the rose, upon which the neck of the knobbears, and relieves the rose from much of the strain usually brought thereon; also, in the construction of the rose in combination with the said plate, so that the rose covers the screw or pin which secures the knob to the spindle.

As heretofore constructed, the seat of the neck of the knob has beenformed in a central recess in the rose, as seen at d, Fig. 2. In attaching the parts together and to the door, the spindle is first inserted, then the rose D over the spindle; then the knob is set into its seat in the rose. This locates the rose in its position upon the door, and in such position the rose is secured; but as the spindle cannot be a perfect fit Within the follower' of the latch, there is, consequently, more or less play of the spindle, so that there is no certainty that the rose is located in an exactly central position, and if not, the neck of the knob forms, as it were, a cam within the rose, and` by frequent turning soon loosens the rose from its fastening, and, the bearing ofthe spindle being Within the latch, the knob forms a lever, which aids materially in detaching the rose from the door. The rst part of my invention overcomes these difficulties.

It is also a Well-known fact that the screw by which the knob is secured to the spindle soon loosens in its seat, and unless frequently returned to its place is lost, and the knob slips from the spindle. The second part of my invention overcomes this difficulty.

In order to the better understanding of my invention, as well as to enable others to construct the same, I will proceed to a description thereof, as illustrated ,in the accompanying drawings.

A plate, b, is formed fiat, as from a sheet of metal, and having a central hole, the diameter of which is equal to the longest diameter of the spindle, so that the angles of the spindle have a bearing upon the edge of the hole, and the said plate is of smaller diameter than the rose E, and so as to be covered by the rose, and thesaid plate is secured to the door independent of the rose, and thus forms a bearing for the spindle.

The rose has an opening through its center sufficiently large to permit the neck of the knob to extend completely through and rest upon the plate b, and also so that the rose may be slipped back to the knob., as seen in Fig. 1.

The plate b is secured to the door before .the knob B is placed upon the spindle, and.

is, therefore, adjusted and secured independent of the knob.

The rose E is slipped onto the neck of the knob, as seen in Fig. l, and the knob then set upon the spindle, the hole for the screw a' being formed nearer the end of the neck than in the ordinary construction, so that when the knob has been secured to the spindle and the rose moved up against the door, the side c of the opening through the rose willcover the .head of the screw and prevent its removal. The rose is secured to the door in the usual manner.

Thus it will be seen that a plate, b, upon both sides of the door, holding'rmly the spindle, prevents the usual Working of the spindle, which produces the loosening of the rose.

I do not broadly claim covering the screw in the neck of the spindle, as this is not new; but,

Having thus fully described my invention,

what I do claim as new and useful, and ldeand the knob and spindle, arranged so as to sire to secure by Letters Patent, isinsert and cover the screw or pin a, substan- 1. The combination of the plate b with the tially as and for the purpose set forth. spindle C and knob B, constructed and arranged in the manner and for thepurpose WM. H. ANDREWS. substantially as set forth. V l Witnesses:

2. The rose E, constructed in the manner CHAS. B. BRISTOL, described, in combination with the plate b R. FITZGERALD.

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