US477445A - Albert a - Google Patents

Description

(No Model.)

' A. A. PAGE.

LATGH. No. 477,445. Patented June 2 1, 1892.

UNITED STATES PATENT OFFICE.

ALBERT A. PAGE, OF NElV HAVEN, CONNECTICUT, ASSIGNOR TO THE SARGENT dz COMPANY, OF SAME PLACE.

LATCH.

SPECIFICATIONforming part of Letters Patent No. 477,445, dated June 21, 1892. Application filed April 11, 1892. Serial No. 428.615. (No model.)

Tow/ll whom it may concern Be it known that I, ALBERT A. PAGE, of New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvement in Cupboard-Latches; and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, iii- Figure 1, a face view of the latch complete; Fig. 2, a side view of the same; Fig. 3, a re verse side view of the same; Fig. 4, a transverse section on line m x of Fig. 3, looking up; Fig. 5, a transverse section on line y y of Fig. 3, looking down.

This invention relates to an improvement in that class of latches which are designed for use upon doors of the smaller class and commonly called cupboard-latches, and particularly to that class in which the latch is provided with a beveled nose,

and having combined with it a spring, so that the latch engages automatically when the door is closed, the bolt being drawn by means of a sliding handle upon the outside of the door, the object of the invention being a simple construction and yet produce a durable and serviceable latch; and the invention consists in the construction as hereinafter described, and particularly recited in the claim.

A represents the case, which, as illustrated, is adapted to be applied to the outside of the door in the usual manner for applying rimlatches. Within the case the bolt B is hung upon a pivot C, the nose of the bolt projecting through a corresponding opening in the side of the case and so that the bolt may swing upon the pivot outward and inward in a plane parallel with the plane of the case, as represented in broken lines, Fig. The case is constructed of a box-like form, open upon its reverse side, and is cast with the pivot C as an integral part thereof. Above the pivot in the outside of the case a segment-shaped slot D is formed, concentric with the pivot C, on which the latch-bolt swings. Upon the outside of the case a knob E is applied, having a shank F, which extends through the slot D and into a projection G on the latch-bolt and there secured as by riveting the end of the shank upon the reverse side of the projection G of the bolt, which secures the knob to the bolt and permits it to slide to the right and left, working through the slot D and so that under such sliding of the knob the bolt will be moved accordingly. The bolt being introduced into the case through the open rear side and thus secured to the knob, the flange of the knob taking a bearing upon the outside of the case, servesto confine the bolt within the case upon its pivot, so that its escape is impossible until the knob shall be removed. The bolt is constructed with an arm H, projecting from its hub upon the side opposite the bolt. This arm is recessed upon its inside to form two sides of a spring-chamber I, the other two sides being formed by the adjacent portions of the case, as seen in Fig. 5.

WVhen the latch-bolt is introduced into the case, a spiral spring J of the requisite length is placed in the spring-chamber, one end of the spring bearing upon the arm at the inner end of the spring-chamber and the other end of the spring bearing upon the interior of the case below, as represented in Fig. 3, and so that when the parts are secured together, as before described, the tendency of the spring will be to force and yieldingly hold the latchbolt in its projected position; but as the knob is moved through the slot F to draw the bolt into the case the spring yields, as indicated in broken lines, Fig. 3, and then when the bolt is free the reaction of the spring will force the bolt into its out or thrown position.

By constructing the bolt with the spring chamber I, as described, the spring is inclosed, so as to be securely held in its place and so that there is no liability of its displacement. Consequently no covering-plate is necessary for the open side of the case, as the spring cannot escape when the mechanism is exposed, as may be in many classes of spring-latches of this character.

The formation of the bolt and the case, as described, permits each to be cast complete and the parts assembled without any considerable degree of mechanical manipulation or labor. The latch thus constructed is not only extremely cheap in production, but is strong, useful, and durable.

I claimin the said spring-chamber, and a knob E The herein-described cupboard-latch, conupon the outside of the case, extending Sisting of a case open on the reverse side, through a slot D, formed foritin the case and I 5 combined with the bolt B, hung upon a stainto connection with the bolt, substantially 5 tionary pivot O in the case and so as to swing as described.

in a plane parallel with the plane of the case, In testimony whereof I have signed this the nose of the bolt projecting through an specification in the presence of two subscribopening in the side of the case, the bolt coning Witnesses.

strncted with an arm H, projecting from its ALBERT A. PAGE. IO hub, and the said arm constructed with a re- WVitnesses:

cess to form with the case a spring-chamber OHAUNOEY T. LAMB,

I upon its inside a spiral spring J, arranged CHARLES L. BALDWIN.

Images