US 810340 A
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Description (OCR text may contain errors)
No. 810,340. PATENTED JAN. 16, 1906.
sPRINGLEss LOCK. APPLICATION FILED JULY-B, 1904.
UNITED STATES PATENT OFFIOE.
Specification of Letters Patent.
Patented Jan. 1G, 1906.
Application filed July 6, 1904. Serial No. 215,560.
direction will move vthe latch to releasing position, and one in which the latching member may be securely locked against movement.
A further object of the invention is to provide a device of-this class in which the boltlocking member may be readily operated by hand or with a key.
With these and other objects in view the invention comprises the novel features of construction and combination of parts more fully hereinafter described.
In the accompanying drawings, Figure 1 is a sectional elevation of a lock embodying the y invention. Fig. 2 is a perspective view of the lock and latch-bolt with the parts thereof disconnected. Fig. 3 is a view similar to Fig. 1, illustrating a slightly-modified form of the device. Fig. 4. is a view illustrative of different forms of keys.
Referring to the drawings, 1 designates a casing provided with an opening 2 and having pivoted therein by a suitable pintle or axle 3 a latch-bolt 4 of substantially L form and comprising a normally vertical portion 5 and a substantially horizontal portion 6, the pintle 3 being disposed at the line of juncture or angle of the arms or portions 5 and 6, whereby the latter will through gravity maintain the bolt normally in latching position. The arm 5 terminates at its free end in a reduced portion or section 7, designed to fit an opening or socket 8, formed wholly through a latch member 9, which in practice projects through the opening 2 in the casing for engagement with a latch-keeper (not shown) and which may be of any appropriate form, attention being directed to the fact that the latch member 9 is removable from and reversible on the reduced section 7, thus adapting vthe device for ready application to either a right or left handed door.
Rotatively sustained within the casing 1 and beneath the free end of the arm 6 is a barrel or sleeve 10, provided with an opening for the reception of a knob-spindle 11 and having a substantially horizontal arm or projection 12, normally extending parallel with the arm 6 of 'the bolt, there being also carried by the barrel 10 an arm or projection 13,. disposed at right angles to the projection 12 and connected by a rod or element 14. with the arm 5 of the bolt. It is to be observed that the element 14 is engaged with a perforated ear 15 on the arm 5 and extended loosely through a perforation 16 in the extension 13 and, further, that the element has formed at one end thereof an angularly-loent portion or head 17, designed to prevent its accidental escape from the perforation 16.
Rotatively mounted in the casing 1 at a point above the rear end of the arm 6 is a locking member 18, provided with a keyhole 19 and having an engaging portion or arm 20, designed to move into engagement with the arm 6 for locking the bolt against movement and with a projection 21, which lies outside of the casing 1 to permit manual operation of the locking member for securing the bolt against movement. The member 18 may be actuated by a key 22, such as illustrated in Fig. lt, to lock or release the bolt 4, it being obvious that the keys may be of varying crosssectional forms, as seen in Fig. 4, and the member 18, provided withan opening 19, corresponding in cross-sectional shape to the appropriate key.
In Fig. 3 there is illustrated a slightly-modilied form of the device in which the bolt 4 may be operated manually by means of a thumb latch 23, extended transversely. through the casing 1, the member 18 being in this instance formed without the extension 21. In other respects the construction and operation are practically identical with that above described.
From the foregoing it is apparent that I produce a comparatively simple inexpensive device admirably adapted for the attainment of the ends in view, it being understood that minor changes in the details herein set forth may be resorted to without departing from the spirit of the invention.
Having thus described my invention, what Iclaim as new, and desire to secure by Letters Patent, is
1. In a device of the class described, a casing, a latch-bolt pivoted therein and comprising a pair of arms, one of said arms being substantially horizontal and acting by gravity to IOO maintain the bolt normally in latching` position, a knob-spindle rotatively disposed in the casing at a point beneath and adjacent to the free end of the horizontal arm, and a pair of projections carried by the spindle, one of said projections being adapted to operate upon the horizontal arm of the bolt for moving the latter to non-latching position, and the other projection being operatively connected with the other arm of the bolt for acting upon the latter when the spindle is reversely located.
2. In a device of the class described, a casing, a latch-bolt, pivotally mounted therein and comprising a vertical and a substantially horizontal arm said horizontal arm acting by gravity to maintain the bolt normally in latching position, a knob-spindle rotatively disposed in the casing beneath and adjacent to the free end of the horizontal arm of the bolt, a pair of projections carried by the spindle, one of said projections being adapted to act upon the horizontal arm of the bolt for moving the latter to non-latching position, and a rigid element connecting the other of said projections with the vertical arm of the bolt for moving the latter to unlatched position when the spindle is rotated reversely.
In testimony whereofl l have signed my name to this specification in the presence of two subscribing Witnesses.
HENRY K. MEIS.
ALVIN CAMPBELL, A. H. STUDEBAKER.