US207310A - Improvement in padlocks - Google Patents

Description

HQ'SCHROE'DER,

Padlock.

No'. 2073lo Patented Aug. 2o, 1187s.

una

INVENTUH. 1 v Erwan SZ-Zfraealar y N. PEYERS, PNoTo-LITHGGRAPHER. WASHINGTON. D C.

STATES PATENT CFFIC-E.

HERMAN 'scHRonnnR or S'r. LOUIS, MISSOURI, `AssIeNoR ro ERNST n. ,voRDTRIEDn on SAMERLAGE.

I'IVIPROVEM ENT IN PADL-OCKS.

Specification forming part of Letters Patent No. 207,310, dated August 20, 1G78 application iilcd Y July e, 187e.

To all whom it may concern:

Be it known that I, HERMAN SoHRoEDER, of St. Louis, inthe county'of St. Louis and State of Missouri, have invented an Improved Lock, of which ythe following is a specification:

The object of this invention is to achieve simplicity and cheapness of construction, safety and reliability in operation and use, and in constructive principle further be adapted for the formation of the various kinds of looks ordinarily made.

The invention will iirst be fully described, and the novel construction and combination of parts will hereinafter be pointed out in the claims. l

Of the drawing, Figures 1 and 2 are plan views of my improved lock, showing its internal mechanism. (Represented in Fig. l in locked condition, and in Fig. 2 in unlocked condition.) Figs. 3 and 4. are each enlarged sectional elevations, taken on lines :c .r and x x', respectively. Fig. 5 is a plan view of the key used for the lock here represented.

A is the lock-Casin g. B is the shackle, pivoted at C, and having the notch at b. (See Figs. 1,2.)

As improved means for locking and unlocking purposes, I have provided the following parts: C represents the bolt or catch. It consists of a plate shaped to have a projection or catch at c and the projecting arm at c, the plane of the latter being deeper than the former, all shown in Figs. 1, 2, 3. rllhe catch c engages with the notch on the shackle, and the arm c and pin c2 connect the catch c c c to the tumblers, while the. deeper plane eX- istin g in the bolt forms a bearing and guiding surface to the operating-tumblers.- The bolt C thus constructed is pivoted in operative relation to the notch of the shackle. (See Figs. 1 2.)

7In the present lock I show two tumblers, d d1, arranged one on top of the other. Each tumbler consists of ,a plate having an open straight Slot, d2, and, as continuation thereof, the diagonal slot d3. (See Figs. 1, 2, 3.) Each tumbler is therefore a duplicate of the other so far as the feature of slots d2 d3 are concerned 5 but it will be noticed that the top tumbler has the further slot addition shown at di, Figs. 1, 2, 3. The purpose of the slot feature d2 is to manipulate the bolt. The. stationary pin c, which projects `through each of' the tumblers, and the flanges Vact asy guides to the tumblers. (See Figs. 1, 2, 3.)

By means of the diagonal` slot d the tum blers, when acting, impart a part arc movement to the bolt C, thus producing the unlocking action. The open out or slot Z4 is the safeguard feature, to prevent unlocking or opening by picking or false keys. A further feature in the tumblers consists in forming each of different lengths. (See d", Fig. 3.) The key-point is therefore shaped to suit the various changes in the length of each tumbler.

In the arrangement of each tumbler the slots in each should be in line, and the rigid as well as movable pin be made to project through the straight part of each slot. rlhe seatin g of both tumblers is done in partially closed sides aull a top plate, the latter being represented in dotted lines, Figs. 1, 2, adjusted out of its true position.

E and E are coil-springs, arranged as shown in Figs. 1 and 2, land are for the purpose of restoring the respective tumblers, also thebolt, to original position. F represents the key, its bits at f being of the different lengths to c o r respond to the edges presented bythe tumblers at d5. The key-hole is at bottom of the lock'.

The internal mechanism being thus constructed and arranged, the operation is as folows: The key is inserted in the key-hole so that the bits f of the key come in contact with the lower edge of each tumbler. Then, by forcing the ,key upward, both tumblers are at same time moved upward. This action permits the pin on the arm of the bolt to travel into the diagonal slots, and in so doing there is imparted a part arc movement to said bolt, which carries its catch away from its shackle, leaving the latter free to be opened. (See Fig. 2.) The springs, as soon as the key has been withdrawn, restore the bolt and tumblers to their tirst position. The lower tumbler, by virtue of its diagonal slot, is virtually the unlocking-tumbler. The top tumbler has the necessary complement of the diagonal slot, but prevents all unlocking action unless its said diagonal slot is parallel and in line with the same slot in the lower tumbler.

Any action or movement that thrusts the slot feature d* in engagement with the pin on the locker fails to unlock the lock. Also, the single operation of one or the other of the tumblers fails to open the lock. The parallel op eratin g relationship of the slotted tulnblers forms, therefore, a feature of great importance, as it insures a most perfect, secure, reliable, and excellent lock.

Each lock can contain different number .of tumblers capable of being` of different sizes; hence no two locks are alike, unless purposely made so.

1. In a padlock, the combination of a vertically-acting tumbler having the angular slot, asspecied, the bolt device carrying a pin by means of which the said bolt can be operated to'pr'od'uce the unlocking action, substantially in themanner and for the purpose set fortln 2. In a padlock, the combination of the bolt device, consisting of a pivoted catch and arm, the latter carrying a pin that projects through the angular slots in the tumblers, the vertical acting tumblers having angular slots, and the additional slot d, whereby the unlocking action of the bolt is prevented, in the manner and for the purpose set forth.

3. The improved padlock consisting of thc casing A, the bolt C, having catch c, arm cl, and carrying-pin c2, the tumblers d dl, having the slots d2 d3, that of d having the additional slot d4, and the springs E E', all said parts being combined to operate by means of a key,

in the manner and for the purposes set forth.

In testimony of said invention I have hereunto set my hand.

HERMAN s oHRoEDER,

Wi tuesses: t

WILLIAM W. HERTHEL, J oHN W. HERTHEL.

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