US168986A

US168986A - Improvement in reversible latches

Info

Publication number: US168986A
Authority: US
Publication date: 1875-10-19
Anticipated expiration: 1892-10-19

Description

W. M. GRIS'CM. Reversible-Latch. N0.168,986. Patentedochmn.

El 27 7' y jl J' N.PETERS. PHOTQ-LITHOGRAPHER, WASHINGTON, D C,

UNITED STATES PATENT OFFICE.

WM. M. GRISCOM, OF READING, PENNSYLVANIA.

IMPROVEMENT IN REVERSIBLE LATCHES.

Speciication forming part of Letters Patent No. 168,'986,`dated October 19, 1875; application filed July 27, 1875.

CASE B.

To all 'whom it may concern Be it known that I, WILLIAM M. GRIsCoM, of Reading, Pennsylvania, have invented certain Improvements in Reversible Latch-Locks, of which the following is a specification The object of my invention is to constructa cheap and simple reversible latch-lock; and thisobject I attain in the manner which I will now proceed to describe, reference being hadis the latch-spindle, provided at the outer end` with thc usual inclined head b, and, at its inner end with a groove, d, adapted to a slotted projection, e, on a plate, f, connected bya pin, f', to a lever, F. Owing to this mode of connectin g the latch-spindle to the plate f the for- A mer can be turned round When drawn out, as shown in Fig. 2. The lever F is recessed at w for the reception ofthe hub G of the knobspindle, which isl provided with two arms, gg', for acting ou the said lever when the latch has to be moved inward. At the upper end of the lever F is a short arm, h, and a slot, o, for the reception of a pn,'z', on a plate, H, this pin t' forming the fulcrum of the said lever. The plate H admits of being slid to and t'ro to a limited extent, and is acted upon by a spring, j, one end of which bears against a projection,

m, on the plate, and the other againsta stud,

n, in the lock-casing, the. tendencyr of the spring being to maintain the said plate H in the position shown in Fig. 1. The projection m has an opening, which, when the plate H is in the position shown in Fig. 1, coincides with openings formed in the opposite sides of the lock-casing for lthe reception of the screw a, which aids in securing the lock to the door.`

When the plate is in the position shownin Fig. l the head b of the latch-spindle is Within a recess in the end plate of the lock casing, and consequently cannot be turned; but when the plate H is released from the control of the screw a it can be moved to the positio'n shown in Fig. 2, and the spindle can then be turned to suit either a right or left handed door.

The lever F is held closely against the hub G ofthe knob-spindle by the action of a spring, p, on the arm h, the butt of the said spring being fitted into a slotted projection, r, lon the end ofthe plate H.

I claim as my invention- A reversible latch-lock, in which a sliding springplate H, carryinga spring, b, and having a tubular projection, lm., arranged as described, in respect to the screw-openings in the lock-case, is combined Witha lever, F, and a swiveled latch-spindle, all substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM M. GRISCOM.

Witnesses:

FR. M. BANKS, HENY RHOADS.