US86998A - Improvement in attaching knobs to their spindles - Google Patents

Description

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e lnite @tibia W. T. MUNGER, OF BRANFORD, ASSIGNOR TO P. ANC F. CORBIN,

1 -OF BRITAIN, CONNECTICUT.

Letters Potent No. 86,998, dated February 16, 1869.

IMPROVEMENT nv ATTACHING KNoEs *ro THEIR sPINDLEs.

i The Schedule referred to in these Letters Patent and making part of the same.

-and useful Improvement in Connectingr Knobs to the Spindles of Locks and I'do hereby declare the following to be a full, clear, and exact description of the said invention, reference being had to the annexedfdrawing, making part of thisl specification, wherein- Figure I is a side view ofthe spindle, knob, and nut, the rose and door being shown partially insection.

Figure 2 is a section at the line xx, transversely, of the spindle.

Similar marks of reference denote the same parts.

The object of this invention is to do away with the pins and screws that have heretofore been employed to hold the knob upon the spindle, and to make vthe connection by a nut and coupling that is behind and Within the rose or plate that is screwed upon the door.

My invention consists in a coupling-nut, screwed upon the angles of the spindle, combined with a coupling upon the shank of the knob, the coupling of the nut heilig partially revolved to lock into the couplingr o f the shank after the knob is in place, and then the nut is prevented from turning and uncoupling the parts, by a key, or its equivalent, introduced beneath or within the rose.

In the drawingv a represents the spindle of 'any lock or latch.

Upon the'angles a screwthread is formed that receives the nut b. v

This nut can be screwed upon thespndle to any `point that may be required bythe thickness of the door, and its shoulder takes against the surface of the plate c, that is screwed. upon the door,4

Ilie nut bis v'formed with coupling-hooks, 2' 2, ex-

" tending out from the face ofthe nut, and the shank d of the knob eis formed with a neck at 3.

The sides of the fiange 4, at the end of the shank (1,'are removed, so that when the knob is slipped upon the polygonal spindle, the parts 2 and 4 pass each other, and, then, by giving the nut b a quarter'rotation, the couplings lock togethenthe hooks 2 turning into the neck 3, and thereby rmly holding the knob, so that it cannot be pulled ofi'. p

In order, however, to prevent the'V nut b being turned by the action of the knob, I introduce a key, i, that is formed-,as a fork, that passes in between the face of the nut b and the end .of the shank'd, and fills the space between the lflat sides of the spindle and the projecting coupling-hooks 2 2, so that said nut cannot turn upon the spindle. y

It is to be understood that the rose k is to be slipped over the shank of the knob, before that is pnt upon the spindle, and after the parts are coupled together, therose is screwed to the face of the door, and covers up the coupling, and also prevents the key 'i falling out, should it work loose. i

What I claim, and desire to secure by Letters Patent, is`

The nut b, formed with the coupling-hooks 2, in combination withthe neck 3, flange 4, and key i, constructed and applied substantially in the Inannerset forth.

In witness whereof, I have hereunto set my signature, this 5th day of November, A. D. 1868.

W. T. MUNGER. Witnesses:

CHAs. PECK,

Enwn L. PRIOR.

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