US1432326A

US1432326A - Tumbler lock

Info

Publication number: US1432326A
Application number: US548416A
Authority: US
Inventors: John B Freysinger
Original assignee: Yale and Towne Manufacturing Co
Current assignee: Yale and Towne Manufacturing Co
Priority date: 1922-03-31
Filing date: 1922-03-31
Publication date: 1922-10-17
Anticipated expiration: 1939-10-17

Description

. B. FREYSINGER.

TUMBLER LOCK.

APPLICATION FILED MAR 31, 192

Patented Oct 11.7, 1922. v

mg i JOHN B. FEEYSINGEE. 0F STAEIEFOED, CUNNEGTICUT, ASSIGNOR TU THE YALE 8:

I E'O'WNE :MANUFACTURENG OOLEPA'FIY, 9F STAIITFQRD, CONNEGTTCUT.

TUMBLEE LOCK.

Application filed March 231,

To all whom it may concern:

Be it known that 1, JOHN B. FREYSINGER, a citizen of the United States, and a resident of Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Tumbler Locks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in tumbler locks, preferably of the pin tumbler type, and is designed as an improvement on the construction disclosed in my pending application No. 530,338 filed January 19th.. 1922.

In the application above referred to the cylinder and tumbler housings are made up of a series of transverse sections secure to a face plate.

The object of this invention is to make the cylinder of a series of alternately arranged hard and softer sections, the softer sections having pockets for the tumblers.

A further object is to provide a cylinder constructed as above with a plug provided with protecting armor at opposite sides the key slot therein, so as to prevent the entrance of a cutting or boring tool through the plug.

In the accompanying drawings Figure 1 is a view in elevation of a cylinder embodying my invention; Figure 2 is a view in front end elevation; Figure 3 is a vertical sectional view on the line 3-3 of Figure 2; Figure a is a longitudinal view at right angles to that shown in Figure 3 the plug being shown in elevation; Figure is a view in rear end elevation showing the rear or clamping plate; Figure 6 is a perspective view of the plug looking toward the rear end of the latter; Figure 7 is a view in longitudinal section of a modification; Figure 8 is a similar view of he same on the line taken at right angles to Figure 7, and Figures 9 and 10 are views of details.

10 represents the head or face plate of the cylinder provided centrally with a bore for the plu 11 which, with the cylinder, carries the tumbler, and which is provided with the usual key slot 12. The face plate is made of hardened steel and the plug of a softer noncorrosive metal mounted to turn in the cylinder and the head or face plate of the latter is 1922. Serial no. 548,4J..

provided with a plurality, preferably two oppositely disposed rearwardly projecting integral arms or members 13 which extend back to the rear or clamping plate 14. and are provided with screw holes for screws or rivets by which the rear plate is secured to the rear ends of the arms or members 18.

Located intermediate the two

plates

10 and 14;, and slotted or notched to receive the arm 13, are the alternately arranged, thin hardened steel disks or plates, 15, and the brass or other softer metal and preferably non-corrosive disks or plates 16, which are shaped externally to conform to the face plate 10, and are each pro *ided with a central hole or bore to receive the plug 11. The arms or members 13 which as before explained are integral with the plate 10 terminate in the plane of the

rear disk

15 or 16 the case may be so that the clamping or rear plate l-l when applied or assembled will fit closely against the rear disk and together with the above parts constitutes the cylinder.

The two plates 10 and 14: and the arms or members 13, and the rear plate 14 constitute the cylinder in which the plug is mounted. If desired the

intermediate plates

15 and 16 may be riveted or otherwise secured as shown in Figure a, and in the present instance I have so shown them.

The plug 11 projects through the cylinder thus formed, and carries at its rear end a cam or other device (not shown) for actuating the mechanism of the lock in the usual manner.

The brass disks 16 are preferably wider or thicker than the hardened steel disk which separate them, and the chambers or pockets for the tumiblers are formed in these brass or softer metal disks 16 and are operated by a key in the usual manner. These tumbler chambers may be of the single or double con-- struction as preferred in order to permit of the removal of the key at half, instead of a full revolution, which however is not material so far as my present invention is con cerned.

The plug 11 is secured within the cylinder in any approved manner, and as shown in Figure 6 is protected by a plurality, preferably four, steel pins 17 driven lengthwise therein from the rear end at opposite sides of the key slot and preferably terminate, although not necessarily so, in a plane in front of the first tumbler, and in the preferred construction do not pass through the outer face of the plug. The front ends of these pins 17 are hardened to obstruct or resist the entrance of a cutting or boring tool, the rear ends thereof preferably being left soft for machining.

Instead however of reinforcing the plug by pins as above described, the plug may be constructed on precisely the same principle as the cylinder, that is to say, may be pro vided with a hardened face plate having a plurality of members 13 and alternating hard and

softer plates

10 and 14 notched to receive said members and secured by a rear or clamping plate 14* screwed or riveted to the arms or members 13- as shown in Figures 7 and 8.

In all of these constructions the hardened steel plates or pins, prevent the penetration of an ordinary cutting tool and prevent the tumblers from being destroyed and thus rendered inoperative and ineffective .by a cutting tool entered at the front.

It is evident that instead of forming the members 13 on the face plate, they can be formed on the clamping plate and secured to the face plate, and this is true of the plug, and that other changes in details may be made without departing from the spirit and scope of my present invention.

Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is

1. In a tumbler lock, the combination of a face plate and 'a rear clamping plate, one of which is provided with a plurality of arms or members, the face plate being of hardened metal, and alternately arranged hard and softer plates between the face and rear or clamping plate.

2. In a tumbler lock, the combination of two end plates, one of which is provided with a plurality of rigid arms or members, alternately arranged hard and softer plates notched to receive the arms on said end plate, the softer plates having pockets for the tumbler or tumblers and drivers, and means for securing the end and intermediate plates together.

3. In a tumbler lock, the combination of end plates, an arm or member integral with one of said plates and connected with the other, alternately arranged hard and softer plates intermediate the two end plates and held in place by the latterand by the member connecting them, the whole constituting the cylinder of a lock, tumblers mounted in pockets in the softer intermediate plates and a plu mounted to turn in said cylinder.

4;. In a tumbler lock, the. combination of a face plateand a rear or clamping plate, a series of alternately arranged hard and softer plates between the said clamping plates and connected with the latter, the said end and intermediate plates being connected and constituting the cylinder of the lock, the softer intermediate plates having pockets for the tumblers, and a plug mounted to turn in said cylinder.

5. In a tumbler lock, the combination of a face plate, a rear or clamping plate secured to the face plate, a series of alternately arranged hard and softer plates interposed between the face and clamping plates and secured to the latter, the said plates constituting the cylinder, the softer intermediate plates having pockets for the tumblers, and an armored plug mounted to turn in said cylinder.

6. In a tumbler lock, the combination of a face plate having a plurality of rearwardly extending members, a rear or clamping plate secured to said member, a series of alternately arranged hard and softer plates between the face and clamping plate, the said intermediate plates being notched to receive the rearwardly extending members on the face plate, and the softer plates having pockets for the tumblers, the said parts constituting the cylinder of the lock, a key plug mounted to turn in said cylinder and hardened steel pins within the plug on opposite sides of the key slots therein.

7 In a tumbler lock, the combination of a face plate of hardened metal, and alternately arranged hard and soft plates: at the rear of the face plate and secured to the latter.

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

JOHN B. FREYSINGER.

Witnesses:

JAM S L. INGALLS. CHARLES A, BERRY.