US1734333A

US1734333A - Lock

Info

Publication number: US1734333A
Application number: US71350A
Authority: US
Inventors: Edward N Jacobi
Original assignee: Briggs and Stratton Corp
Current assignee: Briggs and Stratton Corp
Priority date: 1925-11-25
Filing date: 1925-11-25
Publication date: 1929-11-05
Anticipated expiration: 1946-11-05

Description

Nov. 5, 1929. E. N. JACOB] 1,734,333

LOCK

Filed Nov 25, 1925 WITNESSES w. EW- WM Patented Nov. 5, 1929 UNITED STATES PATENT OFFICE EDWARD N. JACOBI, OF MILNVAUKEE, \VISCONSIN, ASSIGNOR T0 BRIGGS AND STRAT- TON CORPORATION, OF MILWAUKEE, WISCONSIN, A CORPORATION OF DELAWARE LOCK Application. filed November 25, 1925. Serial No. 71,350.

This invention has for its object to provide a. lock of the rotating cylinder type and relates to the means for providing a driving connection between the lock cylinder and the square stem or shaft which connects the lock proper with the part to be operated thereby.

The connection between the stem and the lock cylinder permits of angular displacement of the stem as the lock and the latch or other part operated thereby may be out of axial alignment and the purpose of this invention is to permit of such angular disposition of the stem without impairing its driving con nection.

Another object of the invention is to simplify the construction and make it inexpensive to manufacture.

With the above and other objects in view the invention consists in the lock as herein claimed and all equivalents.

Referring to the accompanying drawings, in which like characters of reference indicate the same parts in different views,

Fig. 1 is a central sectional view of a lock constructed in accordance with this invention;

Fig. 2 is a rear view thereof;

Fig. 3 is a rear end view of the lock cylinder with the stem shown in section, and

Fig. 4 is an end view of the square stem.

In these drawings, 10 indicates a lock case in which a lock cylinder 11 is mounted to be turned by the key inserted therein for withdrawing tumbler slides 12 from the locking grooves of the case as usual.

Different from the usual practice, the lock cylinder 11 in this construction is let in from the front of the lock case and is confined in place by a thin sheet metal shell 13 bent over the face and front flanges of the lock case and having an opening through which the reduced end of the lock cylinder projects, the shoulder formed by the reduced end of the lock cylinder engaging the metal shell to take the end thrust of the lock cylinder as the key is withdrawn therefrom.

At its rear end the lock cylinder 11 provided with a square socket 1 1 to loosely re ceive the end of the square stem 15, but said end of the stem has darts 16 pressed in opposite corners thereof to form outwardly extending wings and the recess or socket 14 has out causing the stem to bind.

The wings 16 of the square stem serve to keep the stem in place in connection with the lock cylinder against removal, but, as the lock case is preferably of die cast metal, it may be desirable to re-enforce it by providing a hard metal. washer 18 at the end of the bore which receives the lock cylinder and seated on the intcgral shoulder formed by the end of the bore, the opening in such washer being of suflicient size to permit the square stem to pass through, butnot the oppositely spread wings 16.

In order that there may not be a binding of the square stem against the washer, the corners of the stem that are pressed to form the darts 16 are notched as at 19, producing undcrcuts to receive the washer when the stem is swung in the plane of the wings 16.

The inner end of the lock cylinder 11 may be provided with a rabbet 20 extending part way around and receiving a stop lug or projection 21 formed in the bore of the lock case. The reduced end of the bore of the lock case beyond the shoulder confining the washer 18 is made somewhat flaring so as to accommodate swinging movements of the square stem incident to the operation of the lock when assembled with the stem at an angle to the axis of the lock cylinder.

In operation whatever angle is given to the square stem with respect to the axis of the lock cylinder, the turning of the lock cylinder will be communicated to the stem through the loosely fittin g driving engagement between the square socket and the end of the stem, the spread wings 16 assisting in communicating this driving connection. the parts permits of the angular position of the stem though the driving connection is maintained notwithstanding and the engagement of the wings with the washer prevents the withdrawal of the stem from the lock cylinder while the sheet metal shell stretched as a skin or covering over the flanged end of the lock case takes the end thrust in the other direction and confines the lock cylinder to its driving relation with the square stem.

The clearance of opposite extensions 17 to take the wings with Contrary to the usual practice, the lock cylinder 11 and the square stem 15 are entered through the front of the lock case 10, making it possible to provide the bore with an internal shoulder integral with the lock case to confine the enlarged end of the square stem. Such integral shoulder is incapable of working loose, being independent of screws and the like and, associated with the integral head of the square stem, produces a permanent connection between the parts. The stem is entirely incapable of being withdrawn from the rear of the lock case and could only be withdrawn from the front where it was entered by dislodging the metal shell 13 and removing the lock cylinder 11. In other words the entire lock structure would have to be destroyed before the stem would be disconnected.

Because of this permanent connection between the stem and the lock case not depend ing upon removable plates held in place by screws, the winged end of the stem is herein referred to as confined in the lock case and the word confined is used with this meaning.

lVhat I claim as new and desire to secure by Letters Patent is:

1. A look comprising a lock case having a shouldered bore, a bearing washer therein seated on the shoulder, a lock cylinder mounted in the lock case, a square driving stem passing through the bearing washer and having oppositely extending wings bearing on the bearing washer and fitting in a recess in the end of the lock cylinder to form a driving connection between the stem and the lock cylinder that will permit of angulardisplacement of the lock stem.

2. A look comprising a lock case having a shouldered bore, a bearing washer therein seated on the shoulder, a lock cylinder mounted in the lock case, a square connecting stem passing through the washer and having oppositely extending wings formed on its end bearing on the bearing washer and loosely fitting in a recess in the end of the lock cylinder, there being notches formed in the stem adjacent the wings to receive the edges of the washer opening and permit the stem to assume an angular relation with respect to the axis of the lock cylinder.

3. A lock comprising a lock case having a bore opening to its flanged front end, a lock cylinder fitting within the bore, a sheet metal shell extendingoter the end of the lock case and around the flange thereof and confining the lock cylinder within the lock case, a washer seated in the end of the bore of the lock case, a square driving stem passing through the opening of the washer and provided with oppositely extending wings on its end to bear against the washer, there being a driving recess in the end of the lock cylinder loosely receiving and "forming a driving fit with the winged end of the driving stem permitting of angulandisplacement of the driving stem.

AL. A look comprising a lock case having a bore opening to its flanged front end, a lock cylinder fitting within the bore, a sheet metal shell extending over the end of the lock case and around the flange thereof and confining the lock cylinder within the lock case, a washer seated in the end of the bore of the lock case, a square driving stem having a winged end fitting in a corresponding recess in the end of the lock cylinder, there being a rabbet around a portion of the end of the lock cylinder, and a stop lug within the lock case bore to determine the positions of the lockcylinder by engagement with the ends of said rabbet.

In a look, a die cast lock case having a bore extending from its front flanged end, a lock cylinder fitting in the lock case, a thin sheet metal shell surrounding the flanged front end of the lock case and holding the lock cylinder in place, a bearing washer seated in the bottom of the bore, a square driving stem passing through the bearing washer and having darts formed on opposite edges to produce spreading wings loosely received in a recess in the end of the lock cylinder, there being notches formed in the edges of the square stem adjacent the darts for permitting angular displacement of the stem, and a stop lug formed in the bore of the lock case and fitting in a rabbet in the end of the lock cylinder for determining the positions of the lock cylinder.

In testimony whereof I aifix my signature.

EDWARD N. JACOBI.