US98736A - Improvement in key-guards - Google Patents

Description

atw ditaa MAX E. BEROLZHEIMER, OF NEW YORK, N. Y.

Letters Patent No. 98,736,

dated January 11, 1870.

IMPROVEMENT IN KEY-GUARDS).

T116 Scheule reen'ed to in these Letters Patent: and making part Of the same 'To all whom it 'may concem Be it known that I, MAX E. BEOLZHEIMER, of

the city, county, andState of New York, have'inx'ented a new and usefulv Improvement in Locks and I hereby declare that the following is a full, clear, and exact description therof, reference being had' to the accompanyingdrawings, making a `part of this specification, and the letters of reference marked thereon, in which t-he same letter represents the same' thing in each figure.

Figure 1 is a front view of the face of a lock, showing my improved` double ratchet-catch and key-hole guard, in position.

Figure 2, the same, but not in position.

Fignre 3, a side view of the pinion-key.

The purpose of my invention is to providea simple,

cheap. secure, and splingless means of confining a hole guard, nor of a hook or button to secure the locked bolt, so that the key cannot be turned, and the key-hole shall, at the same time, be guarded against the inseiftionof an instrument from Without, and consists in the construction and arrangemen'tof 'a pawl that shall lock, at the same time, both the key and the knob-shank spindle, in the manuer I Will now de? scribe.

A is the double catch.

B and B', the upper and lower buttous.

O, the slot, in which the lower button Works.

D, the key-hole guard. E, the key-hole.

F, the pinionon the key.

G, the ratchets.

H, the pivot, on which the catch turns.

I, the ratcheted shank of the knob.

J, the pivot, on which the lower button turns.

The operation of these parts-is as follows: rl`he bolt, having been shot, turn catch A upon its pivot H, so that its upper ratchet-tceth, G, catch in` pinion F, of the key, and its lower ratchet-teeth, G, in the teeth of .the knoh-shank I, and secure the catch, bybringing upper button B into place against the end the catch, and turning lower button B' int-o slot C, of when its hooked end will catch under the face-plate and hold key-hole guardl D, thus brought over keyhole E, firnily and securely in place; neither bolt of the lock can now be thrown back, nor canl the key or knob be turned, nor can a wire or other instrument be inserted to displace. the catch. Either button would Vbe sufficient, but the two give great security, the lower one, especially, against pressure, to force the key-hole guard out of place.

I do not claim being first inventor of a sliding keysame, nor of fastening both key and spindle D; I am also aware that a ratchet has been before made on the shank of the key, and stopped, by. means of a pawl attached to the face-plate of the lock. These, therefore, I do not claim; but

What Iclaim, and desire to secure by Letters Patent, isi key-hole guard and double rat-chet-guard, fastened and secured substantially as described, and constructed on a pivoted lever, to lock the key and knobshank, and secure the key-hole, in the manner and for the purpose specified. w MAX E. BEROLZHEIMER. Witnesses:

WM. F. WILLIs,

S. I. GoRDoN.

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