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Publication numberUS419903 A
Publication typeGrant
Publication dateJan 21, 1890
Filing dateOct 4, 1889
Publication numberUS 419903 A, US 419903A, US-A-419903, US419903 A, US419903A
InventorsWalter L. Avilkins
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Walter l
US 419903 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

(No Model.) W. L. WILKINS.


Patented Jan. 21, 1890 awuewto'c Walter L Wilkins. ablk@ UNITED STATES PATENT ()FFIcE.



SPECIFICATION forming part of Letters Patent No. 419,903, dated January 21, 18190.

Application filed October 4, 1889.

being had to the accompanying drawings,

and to the letters of referencemarked thereon, which form a part of this specification.

This invention relates to doors, and aims to provide simple and efficient means for locking the same top and bottom and drawing it close against the door-jamb, thereby preserving a close joint, which is a desideratum in refrigerator-doors, thereby preventing an unnecessary consumption of ice to maintain the provisioirchamber at the requiredtemperature.

The improvement consists of the peculiar construction and combination of the parts, which will be hereinafter more particularly described and claimed, and which are shown in the annexed drawings, in which- Figure 1 is a rear elevation, parts being broken away, of the invention, showing its application. Fig. 2 is a section onthe line X X of Fig. 1. Fig. 3 is a front view of the knob and key-plate.

A represents a door of ordinary construction, to which the invention is applied.

H is the case, secured to the door by screws D D, and which incloses the operating parts of the lock. The knob-shaft G passes through the door and case H, and is fitted at its inner end in the pinion E.

B and B are the bolts, which ,have teeth F on their opposing edges to mesh with the teeth on the pinion E. The inner edges of these bolts pass through opposite ends of the case H, and are placed on opposite sides of the pinion E, as shown. The outer edges of the bolts are bent toward each other to bring them in the same vertical line, and are held to the door by the screws D, which pass through slots 0 in the bolts. The ends of the bolts are curved and the sides are beveled.

Serial No. 326,050. (No model.)

The dog I, secured to the inner end of the spindle J, is adapted to engage with a notch L in the bolt B and hold the door locked when the bolts are projected. The spring K, between the front side of case 11 and the'front edge of dog I, is adapted to press on the said dog and hold it either in engagement with the bolt B or out of the way. The top and the front side of the dog is straight, and when the spring bears on the front edge of the dog the latter is held out of engagement with the bolt, and when the dog is turned so that the spring presses on the top edge of the dog the latter is held in engagement with the bolt. The latter position is shown by dotted lines in Fig. 1. The spindle J extends into the door, and is squared on its front end to receive a key by which it is turnedto throw the dog.

The front plate P has two openings Q and R, which register with the knob-spindle and the dog spindle, respectively. The opening Q is re-enforced on its inner side by an annular rim, the latter having grooves 0 o, to permit the passage of the lugs N on the knobspindle, which, when passed through the said opening Q and given a partial turn to throw the lugs N out of register with the notches o o, is held in place.

By operating the knob-spindle the pinion E is turned and projected or retracts the bolts, according as the said spindle is turned to the right or left. When the bolts are projected, they are held. fast by throwing the dog I so it will engage with the notch L in the bolt. The dog is operated by a suitable key, (not shown,) which is inserted in the opening R and fitted on the spindle J.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is v 1. In a doorlocking mechanism, the combination, with two oppositely-acting bolts B B, having teeth F, one of said bolts having notch L, and the knob-shaft having pinion E, which meshes with the said teeth F, of the key-operated tumbler I, adapted to engage with the said notch L, having its top and front edges straight, and the spring K, for

pressing on the said edges of the tumbler for holding it in and out of engagement'with the said notched bolt, substantially as described.

2. The hereinbefore-specified door-locking mechanism, comprising case H, pinion E, knob-spindle G, having lugs N, the two bolts B B, having their outer ends beveled and provided with slots 0, and having their inner ends passing through opposite ends of case H on opposite sides of pinion E, and provided with teeth to mesh with the said pinion; one of the bolts having notch L, the dog I; having spindle J, the spring K, for holding the said dog either in or out of engagement with the notched bolt B, and the plate P, having openings Q and R, the opening Q having a flanged rim on its inner side, which rim is provided with notches 0 0, substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2802710 *Sep 16, 1955Aug 13, 1957White Sewing Machine CorpSewing machine
US3772828 *Dec 2, 1971Nov 20, 1973Chahley W LtdManhole cover
US5845523 *Jul 31, 1996Dec 8, 1998U-Code, Inc.Electronic input and dial entry lock
US5887467 *Jul 10, 1997Mar 30, 1999U-Code, Inc.Pawl & solenoid locking mechanism
US6116066 *Mar 29, 1996Sep 12, 2000Gartner; Klaus W.Electronic input and dial entry lock
US6298699Jul 7, 2000Oct 9, 2001U-Code, Inc.Electronic input and dial entry lock
Cooperative ClassificationE05B63/20, E05C9/041