US710722A

US710722A - Padlock.

Info

Publication number: US710722A
Authority: US
Inventors: Henry A Smith
Original assignee: Individual
Current assignee: Individual
Priority date: 1901-10-05
Filing date: 1901-10-05
Publication date: 1902-10-07
Anticipated expiration: 1919-10-07

Description

N0. 710,722. Patented D01. 7, |902.

H. A. SMITH.

PADLOCK.-

(Application med ct. 5, 1901.)

{No Model.)

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HENRY A. SMITH, OF LOS ANGELES, CALIFORNIA.

PADLOCK.

SPECIFICATION forming part of Letters Patent N o. 710,722, dated October` 7, 1902.

Application filed October 5,1901. Serial No. 77,711, (No model.)

This invention is applicable to padlocks adapted for any of the uses to which such locks may be applied. It is specially designed, however, for car and switch locks.

A feature in padlocks ordinarily employed for locking railway cars and switches is that the same may be unlocked without a key by concussion-that is to say, trainmen and others acquainted with the fact are accustomed to readily open such locks by applying pressure to the hasp and at the same time striking the case of the lock in such a way that the inertia of the members of the lock will cause the catch to withdraw from the hasp, thus allowing the hasp to open..

One object of my invention is to construct a lock of very simple character which cannot be opened by any such means.

Another object of the invention is to construct a padlock of few parts of simple character which affords an opportunity 'for considerable variation in the keys for different locks.

The accompanying.drawings illustrate myv II II, Fig. I, looking in the direction of the` arrows. Fig. III is a detail ele Yation of the stationary and sliding wards. Fragments of the frame of the lock are shown in section on line III III, Fig. I. The keypost is also shown. Fig. IV is a plan section on line IV IV, Fig. III. Fig. V is a detail ofthe side of the wards reverse to that shown in Fig. III. Fig. VI is aview of one side of the key detached. Fig. VII is a fragmental View illustrating the other side of the key.

l designates the frame ofthe lock; 2, a hasp, and 3 a catch, respectively furnished with engaging faces 4 5, which are oblique to the path of the catch. The bottom of the recess forms ashoulder and isinclined downwardly and outwardly, so that its remote or outer portion is deeper than its near or inner portion, and the 'end of the catch is inclined inwardly and upwardly ou its under surface or is lformed substantially hook-shaped by extending its tip below the bottom of the main portion a distance equal to the depth ot the inclination of the bottom of the recess to correspond and engage with the shoulder or inclined bottom of the recess. The catch moves in a straight line at substantially a right angle to the free end of the hasp, and in order to permit its tip or hook engaging with or being disengaged from the shoulder or bottom of the recess of the hasp the end of the hasp must be forced inward a distance equal to the depth of the incline of the bottom of the recess, for the reason that the tip ot the catch must move back and forth in astraight line. If desired, the inward movement of the hasp may be limited, as by means of stops formed on the hasp above the recess, which will engage with the top of the frame and prevent the further inward movement of the hasp.

6 designates means to yieldingly hold the catch 3 in locking position. The catch 3 slides in the direction indicated by the double headed arrow and is held in place and guided by a rectilinear way which is formed by the frame l of the lock and studs 7 8, adapted for that purpose.

9 designates means for yieldingly holding Athe hasp 2 open in the position indicated by dotted lines in Fig. I. The hasp is mounted in the frame by means of a pivot 10 in the ordinary way, and the spring 6 yieldingly holds the catch in position, with its engaging face 5 in the path of the engaging face 4L of the hasp.

Il designates a stationary ward furnished with a passage 12 for a portion 13 of a key 14, which is constructed to engage the arm I5 of the catch 3 to withdraw the catch from the hasp. The arm extends downwardly from the under side of the catch between the pins 7 and 8, which project out from one side of the casing and support the catch and act as stops to limit its endwise movement. The tip of the arm is rounded in front for engageyment by the key in throwing it back. The

or connected with the frame in any way.

rear face of the arm is recessed longitudinally for the reception of the free end of the spring 6. The arm is of such width that it extends beyond one side of the catch far enough to engage with one side Z) of the casing and hold the catch substantially midway between the sides of the casing, a lug 22 on the other side of the catch engaging with the other side a of the casing.

16 designates a sliding ward, and 17 means for yieldingly holding the sliding ward in position to guard the key-passage 12 of the stationary ward 11 and furnished with a key-receiving portion 18 to be engaged by a portion 19 of the key 14, which is constructed to enter the case through the usual keyhole (not shown) and to turn on the key-post 2O and arranged to slide the sliding ward when the key is rotated and remove said sliding ward from the path of the catch-operating portion 13 of the key. The beveled portion 13 of the sliding ward extends out of line of the passage 12 of the stationary ward, and the key is furnished with a forward projection 19 to engage the beveled portion 18 before the catch-engaging portion 13 of the key has come into contact with the sliding ward 11.

22 designates a lug on one side of the catch to move inside the frame 1 of the lock to engage the side member a, of said frame to thereby hold the catch in position.

The hasp and catch are rounded at their contacting ends to allow the hasp to pass the catch readily in the usual way.

23 designates the eye or recess in the end of the hasp to receive the catch.

The stationary ward 11 may be formed on In the drawings it is shown connected with the frame by means of a post 24 and by insertion into grooves 25 (shown only in dotted lines) in the sides a Z2 of the frame.

When the hasp is inserted into the frame and the-catch is inserted into the recess 23, the pressure of the spring 9 on the end 26 of the hasp draws the hasp outward in the way usual with spring-padlocks, and by reason of the oblique character of the engaging faces 4 and 5 of the hasp and catch the catch is retained in its locking position. The spring 6 forcibly holds the catch in such position. If an attempt is made to open the lock by concussion, the action'is as follows: Any pressure applied to move the hasp out will force the oblique faces together, so as to prevent the catch from withdrawing from the hasp. To unlock the lock with a key, the hasp is pressed in while the key is rotating. The forward projection 19 of the key iirst acts upon the beveled portion 1S of the sliding ward, and thereby forces the slidingr ward back out of the path of the catch-operating portion 13 of the key, allowing said catch-operating portion 13 to pass through the passage 12 of the ward therefor and to act upon the arm 15 of the catch to slide the catch out of the way. When the catch has been thrown suiiiciently,

the hasp is allowed to withdraw, whereupon the key passes the arm 15 and allows the catch to return to its locking position to receive and hold the hasp when the same is again inserted. In Fig.A I' the curved dotted arrow indicates the movement of the catchoperating portion 13 of the key.

27 designates a guard-ring, any number of which may be applied in the ordinary way to vary the form of the key. Additional variations are provided for by the stationary ward 11, the key-passage 12 through which may be varied in size and position, and the catch-operating portion 13 of the key being necessarily of such a length that it will not pass the sliding Ward 11 unless the same is forced back.

Many variations of the invention will readily suggest themselves to any one versed in this art, and no attempt to illustrate the various modes of carrying out my invention is made in this application, and I do not limit myself to any specific form.

What I claim, and desire to secure by Letters Patent of the United States, is-

1. In a lock, a casing, a curved hasp pivotally secured at one end to the casing and having a forwardly and downwardly inclined recess at the other end and a straight catch arranged to move in a right line substantially radially relatively to the pivot-point of the hasp and at right angles to the free end of the hasp, the outer end of the catch being substantially hook-shaped and adapted to be moved into and out of engagement with the recessed portion of the hasp.

2. In a lock, a casing, a hasp pivotally secured thereto at one end and having its end provided with an inclined shoulder and with a stop, the outer portion of said incline being deeper than the inner portion, and a straight catch movable in a straight line into and out of engagement with'said shoulder, the tip of the catch being inclined on its under surface and extending below the bottom of the main portion to form a hook, and the stop on the hasp being located a sufficient distance above the shoulder to permit of the free end ofthe hasp being forced into the casing beyond its normal position, equal to the length of said eX- tension of the tip of the catch.v

3. In a lock, a casing provided with three pins, a hasp pivotally secured tothe casing, the free end of which is shouldered and the other end extends beyond the pivot, a longitudinally-movable catch on two of the pins, one side of which is provided with a lug for engaging with one side of the casing and the under side is provided with an arm between the lugs, one side of said arm engaging with the other side of the casing, whereby the catch is held substantially midway between the sides of the casing, and two springs on the third pin, one of which engages with the extension of the hasp and the other one engages with the arm of the catch adjacent to one side of the casing.

4. A lock furnished with a catch, means for ICO IIO

IZO

yieldingly holding the catch in locking,Y position, a stationary ward, a sliding Ward, means for yieldingly holding the sliding Ward in position to guard the key-passage of the stationary Ward and furnished with a key-receiving face, and a key to operate said catch constructed to slide the slidingr ward and to then pass the stationary ward to move the catoh.

5. In a lock, a stationary Ward and a sliding ward constructed to extend across the path of the key, a catch, and a key constructed to move the sliding Ward, pass the stationary ward, and move the catch.

6. A lock Comprising acatch; a stationary ward having a passage for a portion of a key; a sliding,r ward constructed to close said pas- HENRY A. SMITH.

Witnesses:

JAMES R. ToWNsEND, JULIA ToWNsEND.