US2538552A

US2538552A - Door lock repair unit

Info

Publication number: US2538552A
Application number: US26029A
Authority: US
Inventors: Lambert L Beery
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-05-10
Filing date: 1948-05-10
Publication date: 1951-01-16
Anticipated expiration: 1968-01-16

Description

Jan. 16, 1951 1.. BEERY DOOR LOCK REPAIR UNIT 2 Sheets-Sheet 1 Filed May 10, 1948 INVENTOR. LAMBERT L. BEERY v v w H E: rink/5:2

WMOLQ ATTORNEYS Jan. 16, 1951 L. BEERY DOOR LOCK REPAIR UNIT 2 Sheets-Sheet 2 Filed May 10, 1948 s m5. M m m M ,v T A W I Z M W L Patented Jan. 16, 1951 U N [TED S TAT E3 FAT FF] CE QOELQ PMR Lambert L- Beery, Minneapolis, Minn.

,Anh ea ienMay 113 3,.591i2JNQ-26e929 .5 Claims.

1 This invention relates to new and useful improvements in door locks and more particularly to an automobile door lock comprising a mtaliy bolt.

Door locks of the rotary bolt type are now quite extensively used in the automotive vindustry because they provide a very practical andpsafe device f or retaining such .doors inclosed phs'ition. Rotary bolts are subject to considerable wear, and may eventually become Worn to the extent that they may .faiil to perform their required duties. It then becomes necessa y o recondi ion th Worn lo k. 'Ihis usually requ re detaehin the :entire look from the door, which maybe more or less expensive, as it entails considerable labor and makes the job a comparatively expensive one, even though the cost of the wornpart which must be replaced may be of minor importance.

An object .of the present invention, therefore, is to provide a simple and inexpensive repair part, including ,a'new ibo'lt, which may readily be applied to a worn look without requiring the removal of the look "from "the door.

A further object is to "providemeans whereby the worn rotary bolt of an automobile door lock may be quickly replaced by a new-bolt-without removing the look from the door, and whereby the cost of substituting a new bolt becomes :a very simple and inexpensive operation.

A further object of the invention resides inthe specific construction-of the rotary bolt, and particularly the means tor supporting the new belt, whereby the worn condition of the original boltsupporting shaft of the lock will have no effect upon the mounting and operation of the new bolt embodied in the lock in'l-ieu of the original worn bolt thereof.

Another ,object resides in the provision of a rotary :bolt having an enlarged :bore therein adapted toreceive a bearing sleeve secured to a Vmounting member, which sleeve is adapted to be fitted over the worn bolt-supporting shaft of the lock to thereby support the new :bolt, :and said 'sleeve supporting member 'zbei-ng :adapted .to the appar nt fr m the .follewine i ptie taheh onnection with the .aeeom hnyihed awin sn the accomp ny ng drawings th e has eeh disclosed a s c ure (designed to carry y m var ous h iects o the invent on but it i 1 9 understood that the invention is not confined lite theexarct features shown, as various chfillwges may be made within the scope h t e plaims on the line vV.3.?3 of Figure with some of l e Parts omitte howin a worn be p o tohe replaced by a new bolt;

Fi ure en .a view illus atin the :methed el removing the worn bolt from the door lock with-,

out disturbing t e mou t ng of the Joel; with the nd or;

\Fieure is a p rspective view vsheet ng th new.

bolt to be substituted for h we e b lt;

niguree is a .DBZSREGfGive yiew of the supporting; braeke for th new olt; i iisa v ew i ustra n th het od@ ass mbling the new bolt in the door l ek;

F gure :8 is a view s win the h wel e? in pe ition in the iockto the eby reeend t p. lock for further use; and

Leisure 19 is detai sectiona i W the i i-h ln the se cted embodimen 101F111? i vention herein dis lo e th e is illvs ated in ileum i @a ortio ref ah ent meh e ehor, g nerally ee ie a l b the h meral 2, eomrzr smg the JUSLI'BJ door lock r3 provided E he ra ers be t 4 e mprise a ;plurality :of :p'r-o jections 5 which engage :the.;keeper.:.ahoy fine;-

fe red stox'rlhe-se anroieotions, eventually become W911i &9 the extent that the .iheepe'r may 71:10 vloneer j 341 1 13 seen-re :the door in its locked ipOSitiOn." may $111311 (become necessary to replace the worn bolt, and sometimes the keeper. I h'e rheeper 51's 55' extennalllyisecuredito the wallet thadoor' ep'ening" v h :e retary-holt i adapted I o engag a sui ab zheener, not shown, s eme w e th eQoroheni-n and has nothing to do with the door lock, and the keeper may therefore be repaired or replaced at any time without disturbing the mounting of the lock. The lock is mounted within the door, as shown in Figure l, and it is therefore customary to remove the look from the door to gain access tothe interior thereof.

In the conventional rotary bolt type lock the bolt 4 is rotatably supported upon a shaft 5 having its inner-end reduced to provide a terminal extension I received in an aperture provided in a wall 8 of the frame of the lock and having its head suitably riveted over, as shown in Figures 3 and 4, to thereby securely anchor the shaft 6 to thewallfl. p H

A suitable bracket 9 is secured to the face plate II of the lock and projects outwardly therefrom and is shaped to provide substantially a semicylindrical portion whichencloses the lower portion of the rotary lock 4, as clearly illustratedin Figures 2 and 3. The outer end of the'shaft 6 is reduced in a manner similar to the inner end thereof and is received in an aperture provided in the outer wall I2 of the bracket 9, and suitably riveted thereto, as will readily be understood by reference to Figure 3.

The bracket 9, it will be noted by reference to Figures 3 and 4, is principally located exteriorly of the lock, and has a portion is extending through the face plate It of the lock and is suitably secured to the inner surface of the face plate-II of the lock by such means as welding, as will be understood.

An important feature of the present invention resides in'the provision of means whereby the" rotary bolt or star wheel of the lock may readily be replaced by a new bolt without removing the look from the door. To repair the door lock as above stated, a new rotary bolt i4 and mounting bracket I5 are provided. The contour of the rotary bolt or part it corresponds to" the contour of the old bolt 'as originally mountedin the door, but the bore IQ of the bolt is made relatively larger than the bore in the original bolt;

" 'The-mounting bracket I5, which provides the supportfor the newbolt M, has one end of a sleeve I6 secured thereto which is adapted to be inserted into the bore IQ of the bolt 54, when the parts are assembled in the look, as will readily be understood by reference to Figures '7, 8 and 9.

The mounting bracket I5 comprises an outer wall land a semi-cylindrical wall I9 which are adapted to be fitted over the cylindrical wall portion 2E of the original bracket 5 of the look, .'i

to engage the cylindrical wall 2i of the bracket 9 of the lock thereby to secure the bracket I5 in fixed position on the lock.

.To recondition the worn lock or one in which the projections 5 of the rotary bolt or star wheel have become worn to the extent that the bolt will no longer serveits purpose, the mechanic simply applies ahack saw blade 27 to the outer end of the shaft 6 of the worn look, as indicated in Figures opening,

1 4 2 and 3, it being understood that there is usually ample room between the end of the worn bolt and the inner surface of the outer wall I2 of the bracket 9 to receive the saw blade.

By careful manipulation of the saw, the mechanic cuts through the outer end of the shaft 6, and also severs the cylindrical wall 2| of the bracket 9 adjacent to the end Wall I2, whereby the end wall I2 of the bracket 9 may be detached, as illustrated in Figure 4. The worn rotary bolt 4 may then be removed from the lock through the usual opening 29 provided in the face plate II of the lock.

After the wall I2 has thus been severed from the bracket 9, the mechanic, with the aid of a,

suitable file smoothens the roughened edges of the bracket 9 of the lock and the lock is then ready to receive the new bolt or star wheel I4, and its supporting bracket I5.

To assemble the new parts I4 and I5 in the lock in lieu of the worn parts 4 and I2, the new bolt M is fitted onto the bearing sleeve it which is machined to provide a running fit for the bolt. The bolt I4 is then fitted into the lock, the worn shaft 5 of the lock being received in the bore I! of the bearing sleeve I6, and the cylindrical wall portion I9 of the bracket I5 fitting over the corresponding wall 2| of the old bracket 9' of the lock, as shown in Figure 8. The length of the bearing sleeve I6 corresponds to the original length'of the shaft 6 of the lock whereby when the new bolt I l and its supporting bracket I5 are secured to the lock, the lock is restored to its original usefulness, provided, of course, that none of the other parts of the lock have been worn to the extent that they may require replacement.

When the, outer mounting. bracket E5 ha been positioned, as shown in Figures 8 and 9, the'set' screw 25 may be tightened whereby the ledges or flanges 22 and 23 are drawn tightly into engagement with the upper edges 24 and 25 of the brack et 9, to thereby inseparably secure the parts I4 and I5 to the lock whereby they become, in effect, an integral part thereof and are not visible from the exterior of the lock as a replacement part. L From the foregoing, it will bc noted that a lock comprising a rotary bolt of the type herein disclosed may readily and inexpensively be-restored to its normal condition by the simple substitution of the parts I4 and I5,for the usual rotary bolt 4, in the eventthat the bolt and its supporting shaft 6 become, worn toJthe extent that they no longer safely secure the door against- From actualexperiencaijl found that the operation of reconditioning a door lock in accordance withjthe present invention may be accomplished in a matter of minutes, as compared to the tedious and expensive job now usually ref quired to restore a worn lock of this type to its original. usefulness.

It will be apparent to those skilled in the art that I have accomplished at least the principal objects of my invention, and it will also be apparent to those skilled in the art that the em bodiments herein described may be variously changed and modified without departing from the spirit of the invention, and that the invention is capable of uses and has advantage not herein trative only, and that my invention is not limited thereto. 7

a I .claim as my invention:

1. A repair unit for reconditioning a door lock of the rotary bolt type requiring replacement of the rotary bolt and in which the rotary bolt is normally supported on a shaft having one end supported in a bracket projecting outwardly from the face of the lock and in which the outer portions of said shaft and said bracket have been removed to permit withdrawal of said rotary bolt, said repair unit comprising a replacement bracket having a Wall portion adapted to fit the remaining portion of said projecting bracket and an outer wall portion extending transversely from one end of said wall portion of the replacement bracket, said transversely extending wall portion being adapted to be connected to said shaft to support the adjacent end thereof, means for connecting said replacement bracket to said remaining portion of said projecting bracket, and a replacement rotary bolt adapted to be retained in position in said lock by said outer wall portion, whereby the lock is restored to normal use.

' 2. A repair unit for reconditioning a door lock of the rotary bolt type of the character described in claim 1, wherein said remaining portion of the projecting bracket is of arcuate shape, said wall portion of the replacement bracket adapted to fit said remaining portion of the projecting bracket is of arcuate shape and has inturned flanges thereon for engagement over the ends of said remaining portion of the projecting bracket and wherein screw means are provided in said wall portion of the replacement bracket for engage- .ment with said remaining portion of the projecting bracket, whereby said replacement bracket is connected to said remaining portion of said projecting bracket.

3. A repair unit for reconditioning a door lock of the rotary bolt type requiring replacement of the rotary bolt and in which the rotary bolt is normally supported on a shaft having one end supported in a bracket projecting outwardly from the face of the lock and inwhich outer portions of said shaft and said'bracket have been removed to permit withdrawal of said rotary bolt, said repair unit comprising a replacement rotary bolt and an auxiliary bracket having one end of a hollow shaft secured thereto adapted to fit over the remaining portion of said shaft with the replacement rotary bolt supported by said hollow shaft and wherein the auxiliary bracket of the repair unit is adapted to fit the remaining portion of the original bracket, and means for securing the auxiliary bracket to the remaining portion of the original bracket.

4. A repair unit for reconditioning a door lock of the rotary bolt type of the character described in claim 3, wherein said remaining portion of the original bracket is of arcuate shape, said auxiliary bracket has a portion thereof of arcuate shape adapted to fit the remaining portion of the original bracket, and said auxiliary bracket has inturned flanges thereon for engagement over the ends of said remaining arcuate bracket portion, and wherein screw means are provided in said arcuate portion of the auxiliary bracket for engagement with said remaining portion of the projecting bracket, whereby said replacement bracket is connected to said remaining portion of said projecting bracket.

5. An article of manufacture adapted for reconditioning a door lock of the rotary bolt type comprising a bracket having an arcuate wall portion and an end wall, the opposed end edges of said arcuate wall portion having inwardly projecting flanges, and a sleeve attached to said end wall on the same side thereof as said arcuate wall portion with the axis of said sleeve coinciding with the axis of said arcuate wall portion.

LAMBERT L. BEERY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 376,900 Morell Jan. 24, 1888 1,900,682 Alcott Mar. 7, 1933 2,224,512 Endter Dec. 10, 1940 2,255,161 Gray Sept. 9, 1941 v 2,405,541 Gerner Aug. 6, 1946