US108261A - Improvement in reversible knob latches - Google Patents

Description

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ALBERT M. HILL, NEW HAVE, ,GONNIIGTIGU'I Letters Patent No. 108,261, dated October 11, 1870.

IMPROVEMENT IN REVERSIBLE KNOB LATCHES.-

The Schedule referred'to in these Letters Patent and making prt of the same.

To ZZ whom it may concern Be it known that I, ALBERT M. HILL, of New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvement in Reversible Latehes; and I do hereby declare the following, when taken in connection with the accompan ying drawing and the letters of' reference marked thereon, to be a full, clear, and exact description of the same, and which said drawing constitutes part of this specification, and represents in- Figure 1, a view of the latch, with the plate removed;

Figure 2, the yoke and latch-bolt, detached;

Figure 3, a section of the yoke, on line a: x;

Figure 4, an inside view of the plate, showing the cam; and in Figure 5, a section, showing the manner of attaching the plate to the case.

This invention relates to an improvement in reversible knob-latches, and consists in constructing the lugs of the yoke with a double incline, so that the holt may bo easily'inserted, either side up, without dierangemeut of thel follower.

A is the case, of common construction.

B, the follower, constructed and arranged to receive the knob-spindle in the usual manner.

C, the laten-bolt, formed upon or attached to a spindle; I), and the said spindle formed upon or rigidly attached to the yoke E, the yoke being constructed with the two arms I" and G, each oftheI arms provided respectiizely with lugs fg, both turning inward onto the follower, as seen in Iig. l.

On the spindle I arrange a loop, a, the ends of which t-urn against the yoke, and so as to leave a space, d, between the loop and yoke, as seen in fig. 2.

In the case a slotted stud, b, is formed, corresponding to the space d between the loop and yoke, so that, when the bolt and yoke are set within the case, the stud I) will pass into the space between the loop and yoke, as seen in iig. 1.

Between the loop and bolt-head a spring is arranged, as seen in gs. 1 and 2, so that, when the bolt is drawn or pressed in', as denoted by broken lines, tl".

l, the loop remains against the stud to support the spring, and when released, the spring throws out the bolt in the usual manner.

For the purpose ot' reversing the latch I form the lugs j" y, as seen in iig. 3, with a double incline, (ontward,) so that, when 'the holt is set into position, the

incline will allow the yoke to pass freely down onto` the follower, without any liability of disa-rranging the follower. 'lo reverse the latch, remove the plate, take out the yoke and bolt, as seen in lig. 2, turn it over, and replace it.

II is the plate, or removable side of the case. Upon its inside I form a cam, n, turning upon a center, which extends through to the outside, as seen in fig. 5. 'Ihe extremes ot' the'cam are of dovctal form, the two sides flat, as seen in rigs. .4. and

in is a stud formed upon the case, and fitted to receive the said cani, the seat for the cani being,r dovetailed, and coi-respondng'with the extremes ot the cam; therefore, with the cam in position, as -seen in iig. 4, set the plate in position. 'Ihe cainpasses into the recess in the stud m. Ihen, with a screw-driver or other suitable instrument, turn the cam imposition as denoted hy broken lines, Iig. 4, and as also seen in fig. 5. The ends of the cam lock into the recess and Secure the plate in position. By this arrangement the plate is removed by simply a quarter turn ot' the screw-driver, and there is no liability to lose the screw, as in a'common method oi'securing the plate, and the. expense ofthe cam is no more than a screw.

I do not wish to be miden-stood as broadly claiming" the latch-bolt and yoke, constructed so as to be re versed by removing them yfrom the case, as such, I am aware, are very old; hut

I do claimy '.Lhe double inclined lngsfg, iomed upon the arms ofthe yoke E, combined with the follower'l, so as to be set onto the said follower, substantially as set forth.

A Llllt' M. 'llllllt Witnesss:

l1. H. Rosselli., l. B. LINE.

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