US99872A - Improvement in combination padlocks - Google Patents

Description

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4or pin It, and prevent its turning. may be placed, it preferred, in the case I) instead ofy l site stt-12s GEORGE K. FARRINGTCN, CF ALCATRAZ ISLAND, CALFORNIA, ASSIGNCR -TO HIMSELF AND FREDERICK AND VICTOR SCHULZ.

Letters Patent No. 99,872,

dated February 15', 1870.

IMPROVEMENT IN CQMBINATION PADLOCKS.

.To all whom 'it 'may concern:

Be it known that I, GEORGE K. FARRINGTUN, of Alcatraz Island, in the county of San Francisco, State of California, have invented a'new and Improved Combination vPadlock; and I do hereby declare that the bllowing is a full, clear, and exact description ot' the same, reference being had to theacconipanying drawings and to the letters marked thereon.

My invention refers to improvements in combinae tion padlocks, and consists ot' certain details of construction hereinafter described, and has for its object the production of a lock that shall be exceedingly difcult to open byany person except some one knowing the combination of numbers used in locking it, and being at the same time simple enough for those who have the key and know the combination--a strong lock and not easily blown open with powder.

In the drawingsy Figure l is a front elevation, showing the face of the padlock.

showing the inside of ,thatfplate Figure 3 is a vertical section through the center of lock.

Figure 4,a`vertica1 section through the center of front plate a.

Figure 5 is a front elevation, showing the internal parts of the lock with the front plate a, 'case b, and rivet-pin c removed. v

Figure 6 is a back view of the change-plate d.

Figure 'i' is an elevation of receiving plate e.

Figure S isV the bolt-wheel j.

Figure 9 is t-he key.

' Figure i0, two views of the bolt g.

Figure 11, a nut or washer, h, for securing the rivetpin c.

Figure 12, the rivet-pm c. t

To enable others skilled in the art or science to Figure `2 is an elevation of the lid or front plate a,

make and use my invention, I will proceed to fully dethe bolt g is placed.

Next in front of the bolt-wheel f the changep'late d is placed. This plate has an opening or passage through which the bolt g may pass, and is provided at its circumference with notches that engage the stop This stop or pin k in the bolteplate i:

It is evident thatthechange-plate can be'placed in as many different positions as there are notches in its circumference.

Next in front of the changeplate the receiving plate is placed. This plate has a recess for receiving the bolt g, when it passes through the change-plate al. The receiving plate. has one hole near its circumfer-A ence, on a line with the center ot' the recess, taped to secure a screw that secures it to the top plate Z. The

`top plate Z is provided with a number of holes for this up the space that would otherwise be vacant, in order that the lock may not be filled with powder for the purpose of bursting it open.

In larger locks I make a hinge-joint at the point marked x, fig. 5, and make the bolt-plate solid -up to that point, so that there may be no vacant space in the lock that could be filled with powder.

ln the position of the parts shown in tigs. 1, 3 and 5 theA stop or pin 7c is in notch l of thechange-plate, and consequently the center line of the passage in that plate comes directly under iig. l on the front plate a, but if we should shift the change-plate around so that any other number, say number 5, should cngage the pin lr, we would iind that thecenter line' of the passage would come directly under number 5 on the front plate a.

Tile Vscrew that connects the top plate l to the receiving plate e passes through the hole opposite N o. l in the top plate Z, and consequently when No. l ot' thetop plate coincides with No. l of the front plate a, the recess in the receiving plate will coincide with the passage in the change-plate No. l, on thehead of the rivet-pin. c indicates the center line of the boltwheel f and the/side that contains the bolt g, and consequently in the position shown in the drawings, the recess in the bolt-wheel f, the passage iu the changeplatc d, and the recess in the receiving plate c are in juxtaposition.

New, it is plain that while the bolt g remains in the recess ot' the bolt-wheel f the bolt-plate@ islocked in lits position, but it i'sevident ,that if the padlock was.;`

recess of the receiving plate e, and if, with the lock still face downward, we should cause the top piate l to make part of a revolution, the bolt g would be retained in the receiving plate, and it is also evident that wheel will be brought directly below the rivet-pin c,' and in that position will allow the bolt-plate ttorbe slid or moved upward, carrying the bolt-wheel with it, and thus open the passage to the hook, or, in other words, the padlock would be unlocked. No matter at what figure the change plate may he set when the bolt was changed to the receiving plate, the rivet with the boltwheel must always be brought to this position before the bolt-plate can be raised. 1t is plain that the bolt j may be'retained in either recess by shifting the parts, so that the communication from one recess to the other is closed.

It will be seen, by reference to iig. 6, that the edges of the passage inthe change-plate d are beveled oli" on the back side, and the corresponding corners oi' the bolt g, and treated in the same manner, in order that iu turning the bolt-wheel f the bolt g may not catch in the change-plate when the lock is held face down, and thus give notice when the recess and passage are opposite each other. A

The hole or opening n is for the purpose of gaining admission when the lock is opened to the screw that eonnectsvthe top plate l to the receiving plate e, and

also to change-plate d.. The key, fig. 9, is provided with a screw-driver for turningvthis screw, and also a point for changing the position of change-plate, that pin k may shut in any notch on change-wheel required every time it is desired to change the combination, which may be done everytime it is locked by moving change-plate with point on key.

A solid turn-staple, having a hole therein for the 'introduction of the hook ot' the lock, and passing through a'hasp fitting the turn-staple, is used in connection with this lock, so that the lockecan be turned eitherside up on the fastening.

Having thus described my invention,

W'hat I claim and desire to secure by Letters Patent is- 1. The bolt-plate i, provided with a recess for the bolt-wheel, and operated as described, for the purpose set forth.

2. The'bolt g, bolt-wheel f, the change-plate d, the 'receiving plate e, the top plate I, the rivet-pin c, the lid or front plate a, the filling Im, andthe case b, combined and arranged substantially as described and-speciiied.

In testimony whereof I have hereunto set my hard and seal.

GEO. K. FARRINGTON. [L. .s.]

Witnesses:

O. WM. SMITH,

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