US614945A

US614945A - Israel geiman

Info

Publication number: US614945A
Authority: US
Publication date: 1898-11-29
Anticipated expiration: 1915-11-29

Description

Patented Nov. 29,1898.

2 SheetQ-S'haet I.

l. GEIMAN.

LOU K.

(Application filed Aug. ,11, 1897.)

No. s|4,945;

'.(Nu Model.)

W W W W W rus n: ins co.

Patented Nov. 29, |898.

nu. 6|4,945.v

I. GEIMAN.

L 0 C K (Application led Aug. 11, 1897.)

2 Sheets-Sheet 2.

(No Model.)

v A77'0HNEY.

WITNESSES www @M7/ym m: Noam: Punks coA PHormrrHov. wnsnmcrau. o. c,

UNITED STATES PATENT OFFICE.

ISRAEL GEIMAN, OF MELROSE, MARYLAND.

LOCK.

SPECIFICATION forming part of Letters Patent N o. 614,945, dated November 29, 1898. Application led August 11 1897. Serial No. 647,846. (No model.)

To all whom, it may concern.-

Beit known that I, ISRAEL GEIMAN, of Melrose, in the county of Carroll and State of Maryland, have invented certain new and useful Improvements in 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.

This invention relates to locks and the object in view is to provide a safety burglarproof lock which will prevent the insertion of a key or the picking of the lock by any one who is not perfectly familiar with the construction thereof.

The improved lock embodies a sliding keyhole-guard which is moved back and forth by means of the key, and this guard must be operated and thrown into a certain position before the key can be brought into operative relation to the lock mechanism proper.

The detailed objects and advantages of the invention will appear in the course of the subjoined description.

The invention consists in an improved lock embodying certain novel features and details of construction and arrangement of parts, as hereinafter fully described, illustrated in the drawings, and incorporated in the claims hereto appended. y

In the accompanying drawings, Figure l is a horizontal longitudinal section through a lock constructed in accordance with the present invention. Fig. 2 is a vertical cross-section through the same. Fig. 3 is an inside face View of one portion of the lock-casing, showing the bolts and actuating means therefor. Fig. 4 is an inside face View of the remaining portion of the lock, showing the slotted sliding guard. Fig. 5 is a detail perspeotive view of the guard, looking toward the front side thereof. Fig. G is an inside face view of the front portion of the lock-case, showing the pinion for actuating the sliding guard. Fig. 7 is a plan view of the keyholeplate which is interposed between the two portions of the look-case.

Similar numerals of reference designate corresponding parts in the several views.

Referring to the drawings, l designates the front portion of the look-case, and 2 the rear portion thereof, the said portions being connected together by screws, bolts, rivets, or other suitable means. The front portion 1 of the lock-case is provided in its rear side with a longitudinal recess 3, and within this recess is arranged a plate 4, provided along one of its longitudinal edges with a rabbet 5. The plate 4 at or near its center is out away or recessed, as' indicated at 6, and within said recess is arranged a pinion 7, the teeth of which project into the rabbet 5. This pinion is provided with a keyhole 8, which is adapted to register with a keyhole 9, extending through the front wall of the part l of the case. When the key is inserted in the opening 9, it enters the opening 8 in the pinion, whereupon by turning the key said pinion is rotated. l0 designates a plate extending across the recess 6 for holding the pinion in place in the plate 4.

ll designates a sliding keyhole-guard which is provided at one edge with a flange 12, adapted to work longitudinally in the rabbet 5 of the plate 4 and provided with inwardlyextending teeth 13 for engagement with the teeth of the pinion 7. The guard 1l is adapted to slide atwise against and lengthwise of the plate 4 and within the recess 3 of the part 1 of the lock-case, and it is provided alongits center with a longitudinal slot 14, which embraces the end of the shank of the key and permits of the sliding movement of the guard. At or near one end the slot 14 is extended laterally and obliquely, as indicated at l5, to receive and permit the passage of the bit of the key, and the plate l0 is also provided with a keyhole-slot 16, which is set obliquely and with which the slot l5 is adapted to register when the bit of the key is passed through the front portion of the case and into the rear portion thereof for operating the lock mechanism. At one edge the guard l1 is provided with three or more notches 17, which are engaged at different times by the bent end 18 of a leaf-spring 19, secured at one end within the portion l of the lock-case. This spring by entering one of the notches inthe guard serves to hold said guard at the point where it is left, thus also holding the pinion 7 against rotation and keeping the keyhole therein in proper alinement with the keyhole 9 in the lock-case. The notches 17 are located at such points that when engaged by the spring they will maintain the guard at each end of its throw and also at the center of its throw, and, further, at the point where the slot 15 will register with the keyhole-slot 1G in the plate 10. Arranged between the two

portions

1 and 2 of the lock-case is a plate 20. This plate is for the purpose of preventing the displacement of the sliding guard 11, and it is provided with a keyhole-slot 21,set obliquely and adapted to register with the

slots

15 and 16 when the guard is in a certain position. This plate is preferably secured to the portion 1 of the casing by screws or other suitable fasteners.

The rear portion of the lock-case is provided in its inner side with a longitudinal recess 22, extending the entire length of said portion and opening out at the ends thereof. In the end portions of the recess 22 are arranged reciprocating bolts 23, the ends of which are adapted to be projected beyond the ends of the lock-case for engaging suitable keepers and also adapted to be withdrawn into the plane of the lock-case out of engagement with the keepers. The part 2 is also provided with a central circular recess or depression 24, in which is arranged an actuating-h ub 25. This hub is itself provided witha central recess 26 and a central socket 27 to receive the end of the key-shank. lt is further provided in said recess and at one side of the center with a socket 28 to receive a projection on the bit of the key, whereby the key is adapted to turn the hub 25. At points diametrically opposite the hub 25 is cut away to form tangential recesses 29, in which are received the inner ends of the bolts 23, the said inner ends being reduced in thickness and being interposed between oppositely-located portions of the hub and pivotally mounted by means of pins 30. The recesses in the hub 25 in which the ends of the bolts are received are formed in such manner as to establish shoulders 31, which cooperate with the ends of the bolts to limit the rotative movement of the hub in one direction. The movement of the bolts in the opposite direction is limited by means of one or more stop-pins 32, located in the end portions of the recess 22.

In view ot' the foregoing description the operation of the lock will be seen to be as follows: The key is inserted through the keyhole 9 in the front of the case and pressed inward until it engages in the keyhole in the pinion '7. By now turning the key the pinion is turned and actuates the sliding guard. The guard is carried from one end of the recess 3 to the other until 'the slot 15 is brought into alinement with the slot 16 and keyhole in the plate 20. The key may now be inserted farther into the lock until the bit of the key passes out of engagement with the pinion 7 and into engagement with the hub 25,where upon by turning the key the projection on the bit of the key will engage the socket 28 in the hub 25. The hub 25 may now be turned and the bolts 23 Withdrawn from their engagement with the keepers,whereupon the door, lid, or other device may be opened. In locking the door, lid, or other device the operation just described is reversed. ln no matter what position the sliding guard is left it will be held in such position by reason of the action of the spring 19, and the pinion will be held stationary by the same means, thus maintaining all parts of the lock in proper operative position and preventing disarrangement thereof.

It will of course be understood that the lock above described is susceptible of various changes in the form, proportion, and minor details of construction,which may accordingly be resorted to without departing from the principle or sacriiicin g any of the advantages of the invention.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is-

l. The combination with a lock, of a sliding keyhole-guard having keyhole-openings registering with the keyhole in the lock-case, and a pinion having a keyhole to receive the key and geared to said guard, substantially as described.

2. The combination witha lock, of a sliding keyhole-guard mounted in the lock-case and provided with notches and teeth, a pinion having a keyhole to receive the key and adapted to mesh with and actuate said guard, and a spring engaging notches in the guard for holding said guard at predetermined points, substantially as described.

3. The combination with a lock, of a sliding keyhole-guard provided at one edge with a notched and toothed iiange and also having a keyhole and slot, a plate set within the lockcase and provided along one of its longitudinal edges with a rabbet to receive said fiange, and a pinion mounted in a recess in said plate and meshing with the teeth of the guard, said pinion having a keyhole, substantially as and for the purpose described.

4C. The combination with a lock, of a sliding keyhole-guard mounted therein, a pinion for actuating said keyhole-guard, said pinion being provided with a keyhole whereby it is adapted to be actuated by the key, and a plate arranged contiguous to said pinion and provided with a keyhole set out of alinement with or extending at an angle to the keyhole in the lock-case, substantially as and for the purpose described.

5. The combination with a lock-case, comprising two sections or portions suitably connected, of a rotatable hub mounted in a recess in one portion or section and provided at diametrically opposite points with tangential recesses, and also provided with a central circular recess, oppositely-extending bolts IOO IIO

having pivotal connection with said hub and In testimony whereof I have signed this having their inner ends arranged in said tanspecification in the presence of two Subscribgential recesses, and a keyhole-guard aring Witnesses.

ranged in front of said rotatable hub and ISRAEL GEIMAN. adapted to be actuated by the key prior to its Witnesses: insertion in and engagement with said rota- D. H. KALTRIDER,

table hub, substantially as described. l EDWARD GEIMAN.