US255118A - Hasp-lock - Google Patents

Description

(No 1vodel.)

' J. F. ROBINSON.

H-AsP LOCK. No. 255,118. Patented Mar. 21.1882.

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PATENT OEEICE.

JOSEPH F. ROBINSON, OF VERONA, PENNSYLVANIA.

HASP-LOCK.

SPECIFICATION forming part of Letters Patent No. 255,118, dated March 21, 1882,

Application filed October l5, 1881; (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH F. ROBINSON, a citizen ofthe United States, residingat Verona, in the county ofAllegheny and State of Pennsylvania,have invented certain new and useful Improvements in Combined Locks and Hasps; and I do hereby declare the following to be a full, clear, and exact description thereof, reference beinghadto the accompanying drawings, forming a part thereof, in which- Figure 1 indicates a plan view of a com bined lock and hasp. Fig. 2 indicates a plan view ofthe lock with the top detached, showing the general construction of its operating.

mechanism and the relative arrangement ot' its parts to each other when it isloeked on the staple. Fig. 3 indicates an edge view of the same, partly broken away, showing the action ot' the key on the locking-bolt and of the pawlspr'ing on the pawl. 1

Like letters of reference indicate like parts wherever they occur.

My invention relates to certain improvements in hasp-locks, and it is peculiarly adapted for use on railroad-car doors, railroad-switch blocks, tank and tool houses, for gates, doors,`

85e., and all other purposes for which the ordinary disconnected locks and hasps have heretofore been in use.

The object of my inventionis to obviatethe trouble and annoyance which are frequently occasioned by losing or misplacing the loch when not attached to the hasp` In the drawings I have shown the combination of an improved form ot' lock with an ordinary hinged hasp. In this case the improved construction of the lock renders it peculiarly adapted for the purpose to which it isapplied, as the combination is not only a permanent one, but the ordinary functions of the hasp are not interfered with when theloek is notin use, and the tongue or lower part of thel ham mer of the lock may in such case merely perform the function of a pin to secure the hasp on its staple. Although I have shown my form oflock combined with a hinged hasp, any other kind of hasp may be used.

In the drawings, A indicates an ordinary hinged hasp, having the hammerB pivoted to it and to the front plate of the lock by a rivet which secures the upper portion of the lock to the hasp. 'Ihis hammer B is provided with a ngcr-lug at the front side of its forward pontion, in order that its lower end or tongue may be readily moved upward to clear the stap.e when the locking-bolt G is drawn toward the front plate ofthe lock and ont ofthe notch of the tongue. This locking-bolt O ismade somewhat thin and flexible atone end, and this end is securely fastened to the hasp by means of a rivet, c. The other end of this elastic locking-bar is formed in such `a shape that it remains somewhat raised from thefaee of the hasp, in order to permit the entrance under it ofthe point of the bevel on the tongue of the hammer when it is forced down in order to lockthe same, in which case the elasticlockingbar is sprung toward the front plate ot' the lock, and as the point of the tongue ofthe hammer passes behind it it springs back when the notch on thetongue is reached and holds the hammer securely. This .elastic locking-bolt C is provided near its center with a pintle, c', having a screw-thread cut upon its surface. This screw-pintle c projects outward toward the front plate of the lock and slightly into the key-hole ofthe same.

D indicates the key, which is provided with a threaded bore adapted to engage the screwthread on the key-pintle c, and is also provided with an annular shoulder near its end to prevent thekey from being drawn into the keyhole when turned, so that it willbe readily understood that the action of thekey when turned on the key-pintle c will be to draw the end of the elastic locking-bolt out of the groove or slot in the end of the tongue and thereby unlock the hammer.

E indicates a pawl, which is pivoted on one ofthe screws or rivets which 'fasten the lock to the hasp and is situated immediately in front of the end oftheelastic locking-bar. This pawl is providedlwithftwo arms, one of which projects downward through a slot in theforward portion of the lower part of the frame of the lock and serves as a means for moving the pawl on its pivot to throw the other arm under the end of the locking-bolt when drawn out of the slot in the end of the tongue of the hammer by the action ofthe key.

e indicates a light elas-tic-sprin g, which is riveted at one of its ends to the front plate of IOO the lock. The other end of this spring is bent sharply backward and alternately engages in two small conntersinks on the side ofthe pawl when it is thrown under or withdrawn from the end of the elastic locking-bar, the function of the spring e being merely to retain the pawl in a xed position when it has been moved in either direction upon its pivot.

The operation ofthe device is as follows: The hasp having engaged the staple, and the arm ot' the pawl being drawn back from under the end of the locking-bar, the hammer is forced down and is locked. When it is desired to release the hammer the key is turned on the key-pintle until the end otl the elastic lockingbar is drawn sufleiently toward the front plate ofthe lock to release the notched end or the hammer, when it may be raised until it clears the staple.

When it is desired to use the article merely as a hasp the pawl is moved on its pivot until the arm ofthe pawl enters between the face of the hasp and the end ofthe locking-bar. rIhe key may then be withdrawn, and as the arm of the pawl retains the locking-bolt in a position which allows the tongue of the hammer to move freely, the ordinary functions of the hasp are not interfered with and the hammer merely acts as a pin to fasten the hasp on its staple, and may be withdrawn, as desired.

I am aware that hasp-locks have been coustrueted in various ways, and therefore do not claim broadly a hasp-loek irrespective of my peculiar construction, arrangement, and combination of its opera-ting' parts; but

What I do claim, and desire to secure by Letters Patent, is

In a hasp-lock, the combination of ahammer pivoted to one ot the rivets securing the front plate of the lock to the bodyof the hasp, the elastic locking-bar to engage the forward endot the hammer, and the screw-threaded licy-pintle to release the locking-bar, all constructed and arranged to operate substantially as herein set forth.

2. The combination ofthe hammer pivoted as specified, the elastic locking-bar to engage the forward end ofthe hammer, the threaded keypintle and a pawl adapted to retain the locking-bar in a tixed position when relieved from the forward end ot' the hammer, constructed and arranged to operate substantially as and for the purpose set forth.

JOSEPH `F. ROBINSON.

Witnesses:

FRANK M. Reese, JOHN S. KENNEDY.

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