US499257A - John f - Google Patents

Description

(No Model.)

J. F. SCHULHOFF.

- SAFE.

Patented June 413, 1893.

UNITED STATES PATENT`l OEEICE.

JOHN F. SOHULHOFF, OF NEW BREMEN, OHIO.

SAFE.`

SPECIFICATION forming part of Letters Patent No. 499,257, dated J' une 13, 1893.

Application iiled January 17,1893- Serial No. 458,706. (No model.)

and is designed to prevent ingress to the lockmech'anism in the event of any one of the spindles thereof being forced in or Withdrawn as is ordinarily done; and it consists in the peculiar formation of the spindle along its shank so as to render its removal impossible, and, in a locking device for such spindle, whereby it is ixedly held in place until it is desired to remove it from within; and, it also consists in the weakening of the spindle at a Vpoint close up to the exterior wall of the safe 'rear elevation of the lock case;

so that it must be easily snapped oft atthat place should any violence be exerted in attempting tol gain access to the safe.

It further consists of other details of improvement all of which will be more fully herein set forth. A

Referring to the drawings forming a part of this specification, Figure 1, represents a Fig. 2, is a vertical longitudinal section on the line .fr-cs of Fig. 3, showing the spindle locking-plates. Fig. 3, is a transverse section on the'line y-y of Fig. 1 showing the spindles and the enlargements thereon, and Fig. 4 is a detail showing a spindle from which the knob or dial plate has been forcibly severed.

In the drawings A, represents the lock case, in which are located the spindles B, and their locking slides.

B', represents the enlarged portions of the spindles which in this instance are solid, so as to admit of no play against the inner walls of the case, and which have their extremities b, b, reduced as shown, the` outer one of course being for the engagement of the knob or dial plate.

'the spindles to their work,once they are in position. These plates are located in chambers F, and are made to tit snugly therein so that they may be made to move to and from the spindles and engage them through the slots c, and atv their inner ends. The locking plates are tapped at c', and screws d, having washers d', thereon permit of their adjustment by means of the slots D, in the rear plate of f the lock case. It will be perceived that each screw d, on being loosened permits the locking plate to move freely in the chamber F, and when vthey are moved laterally so that the slots straddle the spindles the screws are turned lherne and thus lock the plates against anyv displacement, the spindles ofcourse being free to rotate but having no endwise movement because the shoulders bear against the front plate of the case and the locking plates respectively.

At E, on the spindle will be perceived a ring or depression such as vis termed marking in shop parlance,preparatory to the severing of a bar of iron. The object of this marking is to so weaken'the spindle at the wall lof vthe safe as to render it' easily breakable,

and if any violence is attempted in an effort to force the lock mechanism the spindle will break short off, and thus leave no opportunity for the lock mechanism to be picked or blown as the broken end of the spindle will be flush with the face of the safe, and the enlargements on the spindles, within the casing will prevent their being driven inward. Thus it will be perceived that the spindle cannot be withdrawn or expelled and would be impossible as the spindle would only move with the drill, and it would be too short to grasp.

In Fig. 4, of the drawings I have shown the remainder of the .spindle and it is la'slot e which can only be made bybringing this part to an intense heat and making the depression or slot therein with a cold chisel so that one acquainted with the combination may insert an implement therein and open the safe.

It will be understood that I do not limit myself to a solid integral spindle, as collars thereon or openings therein through which pins are passed are equivalents of what I have scribed which changes are not thought neces-A sary to detail here.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A spindle for safe and other locks, having an annular weakened portion exterior to the face of the safe, and separable at that point when force is applied to the same.

2. A spindle for safe and other looks having a central cylindrical enlargement, a tubular casing inclosing the same, the said shaft having reduced bearing ends, one of which extends through the outer wall of the safe, for engaging the knob, the opposite one passing through a rear casing or pocket, in coinbination with a bifurcated plate located in said pocket the legs of which sit astride this end of the shaft, and adjusting screws tapped into said plates and extending through slots in the inner walls of the safe for adjusting and securing said bifurcated plates in position.

3. In combination, a slotted locking plate, a case in which it slides, clamping screws engaging said locking plate and a fixed case plate having slots therein through which said screws pass for adjusting and locking said plate upon a spindle journal.

4. In combination, a spindle having a central longitudinal enlargement and reduced journals, a slotted locking plate for engaging said journals, a casing for said locking plate and set screws for locking said plate to thc rear case plate of the lock.

In testimony whereof I aiiix my signature in presence of two witnesses.

JOHN F. SCHULHOFF. Witnesses:

ED. PATTERSON, CHRIST LAUT.

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