US833266A - Latch mechanism. - Google Patents

Description

' No. 833,266. PATENTED' OCT. 1a, 1906.

H. G. VOIGHT. LATCH MECHANISM. I

APPLICATION FILED JULY 19, 1905.

UNITED sra rns PATENT OFFICE; I

HENRY G. VOlGHT, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO RUSSELL 8; ERWIN MANUFACTURING COMPANY, OF NEW' BRIT- AIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LAUTCH MECHANISM.

Specification of Letters Patent.

Patented Oct. 16, 1906.

Application filed July 19,1905- Serial No. 270,306.

1'0 ML whom it may concern:

Be it known that I, HENRY G. Vorer-rr, a

, citizen of the United States, residing at New Britain, Hartford county, State of Connectidoor is open, so that no part of the latch-bolt will protrude sufficiently to admit of anything catching thereon and becoming torn. It not infrequently happens that the wearing-apparel of persons in passing an open door is caught and torn by the protruding latch-bolt. By my invention this danger is entirely obviated.

In the accompanying drawings, Figure 1 is a plan view, partly in section, of a portion of a lock or latch fitted with my improved holdback mechanism. Fig. 2 is a view of the parts shown in Fig. 1 in full, looking down relatively to the position assumed in Fig. 1. Fig. 3 is a fragmentary view of certain parts shown in Fig. 1, the holdback mechanism being shown in a different position. Fig. 4 is a sectional detail view showing the operating member.

A is a knob.

B is a latch bolt or head.

C is an end plate through which the latchbolt B is capable of reciprocation.

D is a latch-slide.

D is a connection between the latch-slide and the bolt B.

E is a roll-back.

F is a spring arranged to normally project the bolt B outwardly.

G is a retaining device arranged to engage with a suitable stop shoulder or projection on the latchbolt B when said retaining device is in one position and be freed thereof when in another position. This retaining device is preferably formed of spring metal secured at one end G to a part of the end plate C, while another part G is arranged to engage the bolt, while still another part G is arranged to be engaged by the operating member H. This operating member is preferably in the form of a pin, the head of which projects laterally of the lock and is capable of movement in a line at right angles to the line of movement of the latch-bolt B.

J represents the stop-bead of a doorcasing. The position of the operating device H is such that when the door is closed it will encounter this stop-bead J and stand in the position shown in Fig. 1, the opposite end of said operating device moving the retaining member G so as to free it from the bolt B. In this position it will be seen the bolt B may be projected freely outwardly under the influence of spring F, so that it will stand in a position to engage with the keeper-plate, (illustrated conventionally at J such keeper-plates being well known. When the user turns the knob A and retracts the bolt B and opens the door, the operating device H assumes the position indicated in Fig. 3, and the retaining member G also assumes said position wherein it will engage the latch-bolt. K represents the shoulder engaged by said retaining member. (See Fig. 3.) In this particular arrangement it will be observed that nothing stands beyond the face-plate C on the door when the latter is open. danger of tearing the clothes of passers-by is removed. Another and substantial advan tage is that the danger of battering up the strike-plate J when the door is closed is avoided, since the bolt B is not releaseduntil the door is practically closed, at which time said latch-bolt is released. and will spring forward to engage in the recess in said strikeplate.

Having thus described my invention, what I claim is I 1. In a latch mechanism, a frame having a plate adapted to the side of the door and another plate adapted to the edge of the door with a vertical notch at the junction between said plates, a bolt protruding through the end. plate, a rotatableknob carried by the side plate, operative means of connection between said knob and said bolt, means for automatically retaining said bolt when retracted by Consequently all a said knob, and a projecting device guarded bolt when retracted, and means forreleasing in said notch for releasing said retaining sald retaining means automatically, said re- IO means. leasing means having a portion extending 2. In a latch mechanism, a frame having a into and guarded in said notch.

side plate and anend plate rigid therewith, HENRY Gr. VOIGHT.

and having a notch at the end of the side Witnesses:

plate, a spring-pressed bolt carried by said M. S. WIARD,

frame, means for automatically retaining the l C. E. RUSSELL.

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