Untitled record

Application filed May 14,1895. Serial Ho. 549,280. (Ho model.)

To all whom it may concern:

Be it known that I, Andrew A. Smith, a citizen of the United States, residing at Hotchkiss, Delta county, Colorado, have invented 5 certain new and useful Improvements in a Combined Latch and Lock, of which the following specification contains a full, clear, and exact description, reference being had to the accompanying drawings, in which— io Figure 1 is a perspective of the latch complete. Fig. 2 is a view of the locking dog or detent removed. Fig. 3 is a face view of the escutcheon, and Fig. 4 shows the key.

This invention relates to the combined latch 15 and lock shown in another application filed by me of even date herewith, Serial No. 549,279, the present invention consisting in the construction and arrangement of parts hereinafter set forth, and specifically pointed 20 out in the claims.

A represents the skeleton frame constructed substantially as in the application before referred to, except that the lower or bottom member of the back plate or band A² does not 25 extend to the face-plate A'.

B is the latch provided with a yoke formed of the curved arms B' B², at the junction of which is formed the bifurcated bearing B^s, in which turns the hub C' of the locking-dog C, 30 having a notched free end c. This hub is formed separate from the dog, but fits the same sufficiently snug to cause the two to turn together, the dog working in the space between the two members of the bearing.

The upper yoke-arm B' is slotted, as at to permit the free end of the dog C to be swung up therein when it is in active position. The opposite sides of the yoke-arms B' B² are provided with grooves or channels δ², which re40 ceive the adjacent edges of the upper and lower members of the back plate or band A², and thus the latch is guided in its sliding movement.

The rear vertical member of the back plate 45 or band A² is formed or otherwise provided with apertured ears or bearings A⁸ in longitudinal alignment with the latch and the hub C',and in these bearings or ears A⁸ is mounted the hub D' of the knob-spindle cam D, the 50 opposite ends of which engage the inwardlyextending projections δ⁴ at the ends of the latch-yoke, so that as the cam is rocked one or the other of its ends will retract the latch.

E is a bow-spring secured to the face-plate A' with its free end entering a notch a in the 55 lower edge of the latch. This spring occupies the space formed between the face-plate and lower member of the back plate.

F is an escutcheon, having key-holes / and knob-spindle opening/', just as in the appli- 60 cation before referred to, and the key is also the same.

When it is desired to lock the latch against retraction, the key is inserted into the hubC' with its bit engaging the notches c therein, 65 and the dog C is swung down into longitudinal alignment with the latch, in which position its notched end will rest upon the lug D', formed on the middle part of the cam D. In this position it will be impossible to move 70 the latch to .the rear, nor can the knob-spindle cam be rocked in either direction.

By the construction above set forth a very compact, simple, and inexpensive latch and lock is provided. 75

I do not claim, broadly, in this application the key-operated detent carried by the latch, nor the skeleton frame containing such mechanism, nor such dog having a key-operated hub, nor the skeleton frame having the latch- 80 operating spring secured at one end thereto and at its free end engaging the latch, as such combinations and constructions are claimed, generically, in my other application before referred to. 85