US479414A

US479414A - Padlock

Info

Publication number: US479414A
Authority: US
Publication date: 1892-07-26
Anticipated expiration: 1909-07-26

Description

UNITED STATES.

PATENT OFFICE.

EDWVARD T. FRAIM, OF LANCASTER, PENNSYLVANIA.

PAD LOCK.

SPECIFICATION forming part of Letters Patent No. 479,414, dated July 26, 1892.

Application filed October 30, 1891- $erial No. 410,382. (ModeL) To all whom it may concern.-

Be it known that I, EDWARD T. FEAIM, a citizen of the United States, residing in Lancaster, in the county of Lancaster, State of Pennsylvania, have invented certain Improvements in Padlocks, of which the following is a speci fication.

This invention relates to improvements in that class of padlocks in which a U-shaped longitudinally-moving shackle is employed, having the fast limb thereof held in said case bya spring extending transversely there of 3 and the invention consists in the construction and combination of the various parts, as hereinafter fully described, and then specifically pointed out in the claims.

In the drawings which form a part of this specification, Figure 1 is a side view of the lock, the front of the case being cutaway to show the interior mechanism. Fig. 2 is a horizontal section of the lock on the line an ac, Fig. 1. Fig. 3 is a top perspective view of the plate located above the spring, and Fig. 4 a similar view of the ward-plate next below the spring. Fig. 5 is a top plan View of the stationary plate between the two ward-plates, and Fig. 6 a perspective view of the inner face of the bottom plate of the case.

Similar letters indicate like parts throughout the several views.

Referring to the details of the drawings, A indicates thelock-case; B, the shackle; b, the short or swinging limb of the shackle, and b the long or fast limb, having notches 12 cut in opposite sides of the body thereof and a boss 12 formed on its end.

N indicates vertical ribs cast on opposite sides of the case to prevent rotary movement of the diiferent plates located between them.

D is a stationary plate having a centrallylocated aperture 01 that receives and steadies the heel of the key, studs d being formed on its upper face to prevent contact of the key with the top of the case. On the lower face of plate D there are cast four legs d, between which is placed the V-shaped spring E, extending horizontally between the ends of the case. The head e of the spring is cylindrical in general outline and receives the short limb b when the shackle is locked in the case, as seen in Figs. 1 and 2, the leaves 6 at the same time engaging the notches in the limb b.

The legs d rest upon a ward-plate F, having a central winged key-opening and a semicircular extension f, projecting under and supporting the head e of the spring. Legs f eX- tend downward from ward F and rest upon the stationary plate G, having a circular aperture g of sufficient diameter to permit a ward of the key to revolve therein. The legs g on the lower face of plate G bear upon a ward-plate H, similar in construction to wardplate F and having its legs h resting upon the bottom plate of the case.

M designates the bottom plate, which is put in place after the interior mechanism is inserted in the case and is there secured by riveting over the edges of the vertical walls of the look, as shown in Fig. 1. In the bottom plate there is a winged key-opening similar to those in the ward-plates F and II, and on diagonally-opposite sides of said key-openings are formed stops m, adapted to limit the revolution of the key. Near one end of said plate is a lug m, located to engage the inner side of the boss 6 when the shackle is locked in the case, the long limb when the shackle is so locked extending down to the bottom plate. The long limb b tapers downward from the notches b to the boss 11 which is of greater diameter than the maximum distance apart that the legs d of plate D allow the leaves 6' to be separated, so that the spring E not only serves to lock both limbs of the shackle in the case, but also prevents the long limb being detached when the other is withdrawn. The legs d prevent any transverse displacement of spring E and hold it in position to be engaged with the notches in the long limb of the shackle, while ward-plate F affords a single uniform bearing for the body and head of said spring, the said two plates preventing any vertical displacement of the spring by the pressure of either of the limbs upon its inner surface.

As will be observed, all the plates are cast separately from the case, thus rendering the casting of both the case and plates much easier and cheaper than when the supports for the spring are formed with the case. I

In other locks of this class the shackle can be moved somewhat from side to side, and thus slightly move the several plates, so as to facilitate the use of false keys to open the lock. The lug m, which has a curved outer face that fits up snugly against the boss b prevents any movement of the shackle and holds it rigidly in its place.

There is another and very important advantage in the construction of this lock over that of others of the same class in which separate and distinct devices are employed for locking both limbs of the shackle in the case and for preventing the detachment of the long limb when the shorter one is withdrawn. In my lock the same spring performs both duties. This not only simplifies and cheapens the construction of the look, but materially reduces the time and labor required in putting .the parts together.

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

1. In a padlock, the combination, with the case and shackle, of a stationary plate having legs formed on one face thereof, a spring located between said legs and extending horizontally between the ends of the case, said spring being adapted to engage the long limb of the shackle to lock both limbs in the case and prevent the long limb being withdrawn therefrom, and means for holding the spring in place, substantially as and for the purpose specified.

2. In a padlock, the combination, with a case having vertical ribs formed therein, of a shackle with notches cut in the body of the long limb and a boss formed on the end thereof, an upper plate located between said ribs and having an aperture through it, studs on the upper and legs on the lower face of said plate, a V-shaped spring located between said legs and adapted to engage with the notches and boss of said long limb, and means for holding the spring between said legs, substantially as and for the purpose specified.

3. In a padlock, the combination, with a case having vertical ribs formed therein, of a shackle with notches cut in the body of the long limb and a boss formed on the end thereof, an upper perforated plate located between said ribs and having studs on the upper and legs on the lower face thereof, a V-shaped spring located between said legs and having a head constructed to receive the short limb of the shackle, the leaves of the spring being adapted to engage with the notches and boss of the long limb, a stationary plate located below said spring and having an extension projecting under the head thereof, and means for supporting the stationary plate, substan tially as and for the purpose specified.

4. In a padlock, the combination, with a case having vertical ribs formed therein, of the long limb of the shackle, constructed to be engaged by a spring to' lock both limbs in the case and prevent the long limb being withdrawn therefrom, an upper stationary plate located between said ribs and having legs formed on one face thereof, a spring located between said legs adapted to engage the long limb of the shackle, and plates resting upon the bottom of the case and supporting the upper stationary plate, substantially as and for the purpose specified.

5. In a padlock, the combination, with a case having vertical ribs formed therein, of a shackle with notches cut in the body of the long limb and a boss formed on the end thereof, an upper perforated plate located between said ribs and having studs on the upper and legs on the lower face thereof, a V-shaped spring located between said legs and having a head constructed to receive the short limb of the shackle, the leaves of the spring being adapted to engage with the notches and boss of the long limb, a stationary plate located below said spring and having an extension projecting under the head thereof, and plates resting on the bottom of the case and supporting the stationary plate below the spring, substantially as and for the purpose specified.

6. In a padlock, the combination, with a case having vertical ribs formed therein, of a shackle with notches cut in the body of the long limb and a boss formed on the end thereof, an upper perforated plate located between said ribs and having studs on the upper and legs on the lower face thereof, a V-shaped spring located between said legs and having a head constructed to receive the short limb of the shackle, the leaves of the spring being adapted to engage with the notches and boss of the long limb, a stationary plate located below said spring and having an extension projecting under the head thereof, plates resting on the bottom of the case and supporting the stationary plate below the spring, and a lug formed on the bottom of the case and adapted to engage the boss on the long limb of the shackle when locked in the case, substantially as and for the purpose specified.

EDWARD T. FRAIM.

Witnesses:

I. O. ARNOLD, WM. R. GERHART.