US2004435A - Lock - Google Patents

Description

E. N. JACOBI LOCK yJune 1l,

v7B Sheets-Sheet l Filed Aug. 27, 1934v E. N. JACOB! June ll, 1935.

LOCK

Filed Aug. 27, 1954 2 Sheets-Sheet 2 Patented June 11,1935l UNITEDSTATES PATENT oFFicE j i LOCK Edward N. Jacobi, Milwaukee, `Wis., assignor to Briggs & Stratton Corporation, Milwaukee, Wis., a corporation `of Delaware i k Application august 27, 1934, serial No. 741,537

This invention relates to improvements in cylinder locks-and refers more particularly to pillar` locks.

A In Vlocks of this type, an operating shaft or 5 stem extends rearwardly Vfrom the lock `cylinder to'drive lock mechanismlocated inwardly of the cylinder, and it is a general object of this invention to provide novel means for attaching the `stem or shaft to the cylinder.

' Heretofore, this attachment has generally been rigid, although in some constructions a more or less universally jointed connection between the. cylinder and the operating shaft or stem has been employed to accommodate misali'gnment between the cylinder and the lock mechanism to be actuated, but the connections heretofore employed for Y loosely joiningthe cylinder and stem have been moreor less complicated and expensive to manuj j facture, and it is` therefore, a more specific object Aof this invention to` provide an im pliiied connection affording a de motion between the cylinder an can be embodied in the locks at no greaterexpense than the conventional rigid connection.

Another object of this invention is to provide a connection `between the lock cylinder andthe i shaft which is so constructed that these parts may be readily joined at any time so that the lock-per t se may be carried through all of its various man- 30 ufacturing operations before the shaft is attached.

This permits the lock to 4be equippedwith a shaft of any length without in any .wise altering the manufacturing andhandling equipment for the locks per se. l j C A further fobject of this invention is to provide alock construction in which the `usual torsion spring whose function is to return the cylinder to unlocked position, also serves to damp out rattles.

With the above and other objects in view which i will appear as the description proceeds, this in-V vention resides inthe novel construction, com-` bination and arrangement of parts substantially as hereinafter described and more particularly de,- fined by the appended claims, it being understood that such changes in the precise embodiment of the hereindisclosed invention `may be made as come within the scope of the claims.

The accompanying drawings illustrate two complete examples ofthe physical embodiment of the invention constructed according to the best modes so far devised for the practical application of the principles thereof, and in which: ,a

Figure 1 is a view partly in side elevation and tion `of alock embody-` partly in longitudinal sec ing this invention;

proved and sim gree of universal d the stem, which 17 Claims. (Cl. Y0-.46) l U "Figure 2 is a perspective View of the cylinder per se with parts broken away and in section to` more clearly illustrate its portion ofthe connection between the cylinder andshaft;

Figure 3 is a perspective view illustratingpart 5 of the oposite `side of the cylinder;

Figure 4 is a perspective viewof the inner end: of the shaft; i y

Figure 5 is a cross section view taken through Figure l on the plane ofthe line 5 5; 10

` Figure 6 is a View similar to Figure '7, but il. lustrating aY slightly modified embodiment of I this invention; i

Figure? is a perspective view similar to Figbodime'nt; and i Figure Bis a perspective view of the inner end of the shaft employed in the modified embodiment.

companying drawings in which like numerals designate like parts throughout the several views the'numeral 5 represents the casing or mounting member of the lock which is bored as at` 6 to Ward `end the cylinder has an enlarged flange 8 `which engages the `front end of the casing `to j limit `axial motion `of the cylinder in one dii drawal-in. an outward ,axial direction.

The particular manner'in` which the cylinder is secured against rotation under ,control of a key 9 forms no part of this invention` andfis respectv the vlock is `preferably like Patent No. `1,965,336,` issued toJohn W.FitzGerald, July 3rd, '1934, wherein the locking member is pro-` jectible radially from a recess or chamber I0 in `with the casing,by key operable tumblers mov.. ablerperpendicularly to the motion of the locking member in a. tumbler receiving chambery I I. Extending rearwardly from the casing is a skirt I2 in `-which'the reduced inner. end` I3 of v45 the `cylinder is received. Near, its inner end A, the skirthasja transverse wall I4 bored as at I5 to,.1oosely receivelthe shaft I6 which serves to transmit the rotation of the cylinder to the lock Theshaft |6` projects through the bore I5l :andis connectedto the adjacent inner end of the cylinder ina novel manner which `permits a degree Vof universalrelative motion between the cylinder and shaft to accommodate misure 2 showing the cylinder ofthe vmodified ein; Referring lnow more *particularly` to vthe ac- 2oV rotatablyreceive a lock cylinder 1. At its for- 25`Y rection. Any suitable means, not shown, may i be provided `to secure thecylinder against With- 30` y therefore not shown in detail. However, in this '35" the side ofthecylinderfor locking engagement 4o mechanism, not shown, 50

to the cylinder axis to increase the cross sec-j` tional area of the recess and give it an undercut formation.

The cylinder as is lcustomary in lock manufacture is die cast and the under cut recess i7V is conveniently formed by two intercommunicating pockets produced. by two cores, one of which is pulled axially of the cylinder and the other radially thereof. The core which is pulled radially Vof the cylinder gives the recess its under cut formation by forming that part of the recess partially dened by the curved wall l5 andas best shown in Figure 3 this portion of the recess is so located that the core forming it may be withdrawn simultaneously with the core forming the recess or chamber l in which the locking member operates,

The hooked end of the shaft which ts into the recess lll is formed by milling a round bottomed cut in one side ofsuch size that at its deepest portion the shaft has a cross sectional area a little less than the cross sectional area of the semicircular mouth of the recess lll so that the cylinder and shaft will be non-rotatably connected while at the same time a degree of universal motion between the cylinder and shaft will be aiorded.

As will be readily apparentl from an inspection Y' of the drawing, a tapered portion i8 is formed "at the extreme end of the shaft IB to supply the necessary clearance for universal-joint action. The tapered end portion i8 also facilitates assembly of the shaft with the cylinder. The shaft, to be assembled with the cylinder, must be inserted therein while disposed in an angular position with respect to the axis of the cylinder. Such angular disposition of the cylinder and shaft, however, can only be had when -the cylinder is withdrawn from the casing, con- Aof an opening 23 formed in the adjacent portion of the casing. To insure the engagement of the rearmost end of the spring with its edge 2l, the frange '22 extends into an annular channel 24 formed in the transverse wall IG. The disposition of the torsion springwith re- ,spect to the under cut recess Vi is such that the spring normally tends to swing the shaft in the direction of movement necessary to disengage the shaft from the cylinder, as shown in Figure i.

The motion of the shaft produced by the spring is, however, limited by the engagement of the shaft with the bore i in the partition wall IQ so that as long as the Vcylinder is assembledA with its casing detachment of the shaft is impossible.

This action ofthe spring takes upV play inV the connection between the shaft and the cylinder and serves to press the cylinder and the shaft to one side of the bores in which they operate so that play therebetween will be taken up. Rattles are thus eifectually overcome.

In the modified embodiment of the'invention illustrated in Figures 6, '7 and 8, the cylinder has a bore 255 in its inner end into which the adjacent end of the shaft or stem 21 projects.

Unlike the structure illustrated in Figures l to 5, inclusive, the shaft or stem has no flattened portion, but is circular throughout. Its extreme inner end.28" is rounded as illustrated and the diameter of the bore 2S is suiciently large to allow a degree of swiveling motion on the part of the stem or shaft therein.

To provide a driving connection between the Cylinder and shaft, a radial pin. 2S which may be considered a hook or abutment projects radially from the inner rounded end 28 of the shaft to extend into a radial opening Sii communicatto yieldably maintain the cylinder in a predetermined position of rotation which spring also reacts against the shaft or stem to hold the same at an angle with respect to the aXis of the cylinder so that in use the tension of the spring serves to damp out rattles.

From the foregoing description taken in connecticn with the 4accompanying drawings, it will be readily'apparent to those skilled in the art to which this invention appertains, that the connection between the shaft and cylinder afforded by this invention is exceedingly simple and may be produced as cheaply as the heretofore commonly used rigid connection; and that the assembly of the shaft with the cylinder may be left to the last so as to facilitate the handling of the locks during the manufacture thereof; and that the construction of the joint or connection is such as to utilize the conventional spring which serves to hold the cylinder in its normal position of rotation, to damp out rattles.

What I claim as my invention is:

l. In a lock of the character described, a cylinder having a cavity to provide an under cut recess in one end, a shaft to transmit rotation of the cylinder to mechanism to be actuated, said shaft having a hooked end portion adapted to be non-rotatably received in said under cutgrecess, the shaft being readily detachable from the cylinder while in a predetermined angular position with respect to the cylinder, and a casing for the cylinder having a part to engage the shaft and hold thesame against movement to said predetermined angular position in which it is detachable from the cylinder.

2. In a lock of the character described, a rotatdable lock cylinder, a shaft to transmit rotation from the cylinder to mechanism to be actuated, a non-rotatable connection between the shaft and the cylinder so constructed as to afford a degree of relative universal movement between the cylinder and shaft, said connection being readily decasing for the cylinder `having a partrextending;

rearwardlyptherefrom to engage the shaft` and hold the same against movement to said predetermined angular position. I

i 3. Ina lock of the character described,a rotatable lock cylinder, a shaft to transmit rotationof the cylinder to mechanismto be actuated, asulzo-` stantially universal-joint connection between the shaft and cylinder, comprisigaI hooked end por-J tion on the shaft having'a portion noncircularin cross sectionand fitting in an under cutrecess inthe cylinder the mouth of which is ofa shape corresponding tothe noncircularcross section of i the hooked end portion on the shaft, said connection being readily detachable `with the ,shaft in a predetermined angular position ywith i respect to` the cylinder, and a casing for the cylinder having I a part to engage the shaft and hold the same against movement to said predetermined angular position.

a4 hooked end portion on `theshaft engageable-in` 4. In a lock, Va rotatable cylinder, a shaft tov transmit rotation of thecylinder `to mechanism to be actuated, and a connection between lthe shaft and cylinder-having a degree of relative universal motion between the cylinder and shaft, and

said connection comprising a substantially semicircular recess opening to one end of the cylinder `with the flat wall 4of said recess cut back to increase the cross sectional areaof the recess, and

said recess in an angular position with respect to the axis of the cylinder, said hookedrend portion having a portion of minimum cross "section sub- 4stantially corresponding in shape and size tothe p semi-circular mouth of the recess.;v Y i 5. In a lock, a rotatablecylindena shaft to,`

transmit rotation of the cylinder to `mechanism .to be actuated, and a connection between `the shaft and cylinder having a degree of relative universal motion between the cylinder and shaft, 'and said connection comprising a substantiallysemi-cir`i cular recess opening vto `one endr of the' cylinder with the flat -wall of said recess cut back to in# crease the cross sectional area of therecess, a;

hooked end portion on the shaft engageable in said recess in anV angular positionwith respect to the axis of the cylinder, said hooked end portion having a portion of minimum cross'section subtatable therein with one end terminating short of l the adjacent end of the casing, a shaft `to transmit rotation from the cylinder to mechanism to be actuated, the shaft having an end portion inserted through said endof the. casing and adapted to be connected with the cylindena non-rotatable connection between the shaft and cylinder affording` a degree of relative universal motion between the shaft and cylinder, said connection being readily detachable when the shaft and cylinderV are in predetermined positions angular with respect to each other, means on the casing engageable with the shaft to hold the same against movement to said predetermined position so that detachment of the shaft from the cylindernecessi- `tates withdrawal of the cylinder and shaft from the casing. i

7. In a lock, a rotatable cylinder, a shaft to 2;()041435' a tachable with the shaft in a` predetermined anguf lar position with respectto the cylinder, anda transmit `rotation of the cylinder to' mechanism tobe actuated, a non-rotatable connection be-1 tween the shaft and cylinder affording `a ,degree` of relatively Vuniversal motion between said shaft and cylinder, `the connection being such that the, shaftis readily-detachable from the cylinder .in` an angular positionvwith `respect'to the; axis `of i the cylinder, and a casing for the cylinder hav-` ing a Yborethrough which the shaft projects, said bore beinggsufliciently large to accommodate a.; degree of relative universal motion between thel shaft and cylinder while holdingthe shaft against i movement to its angular position at `which. it,

is detachable from the cylinder.`

- 8. In a lock of the character described, a rotat? ablecylinder `having a recessV providedwith af non-circular restricted mouth, a shaft,` to transmit rotation of the cylinder; to mechanism to bei "actuated said shaft having a hooked end pro.` vided with a portion of lreduced cross section sub-' stantially corresponding in `size and shape'r to; the

mouth ofthe recess in the cylinderand readilyi engageable and disengageable from the saidI recesswith `the shaft in an angular position `-with 3respect to the; axis of the cylinder, anda casing `for Vthe cylinder having a `bore to receive the;`

shaft, said `bore being ofrLthe size to permit the `shaft a degree ofuniversalmotion with yrespect to the` cylinder whileV holding, the shaft Aagainst movement toits angular-position at which its hooked end is disengageable from .the cylinder recess.` t, v

9. In a lock, a rotatable cylinder, a shaft to transmit rotation' of the cylinder to mechanism to beactuated, and a non-rotatable connection gree ,of relative universal motion between the shaft. and` cylinder,v said connection` comprisingua hooked end onthe shaft fitted 4in an under cut Y recessinthe cylinder, said recess in the cylinder 1135;* betweenj fthe shaft and cylinder so constructed*` t asto 4be Areadily disengageable and affording ,a rdebeing formed `jointly by Ia, noneircularV pocket; a

axialfto the cylinder andropening` to theinner end thereof interoo-mmunicating with a second, pocket opening-to one side of zthel cylinder, and said recess having a portionofrgreatest cross-sectional area inwardly of its open mouth.

10. In a locky of the character described, a diel cast lock cylinder, ashaft to` transmit movement of the lock cylinder to mechanismv to be actuated,

and a substantially universal joint connection` Vbetween the shaftfand cylinder including a re-j.`

cessin the inner `end of the cylinder receiving the adjacent -end portion of the shaft, said recess being formed jointly by two cored intercommuni-V eating openings,` one of which extends axially of the cylinder and opens to the inner end of the cylinder and the, other ,of which extends substantially diametrically of the cylinder and opens to one-side thereof, said second opening being of such shapeas to give thev composite recess an under cut configuration.

11. `In a lock of the character described, a

, bored casing, a lock cylinder rotatable 'in the cas- Qing bore with its inner end terminating short vof the adjacent end of the casing, a shaft to transmit rotation of the cylinder tov mechanism tobe actuated having ahooked end portion received `in the casing and engaged in a recess in the adjacent inner end ofthe cylinder, said hooked portion of the shaft and the recess inY the cylinder being so shaped as to afford a non- `rotatable connection between thecylinder and shaft having a degree of relative universal motion to permit misalignment` between the cylinder and shaft, and spring means connected with the cylinder and casing `to yeldably maintain Vthe cylinder in a predetermined position of rotation, said spring means bearing against the shaft and tending at all times to move the shaft angularly with respect to the axis of the cylinder to maintain the several parts under'spring tension and precluderattles. y

l2. In a loclrof the character described, a bored casing, a lock cylinder rotatable in the casing-bore, a shaft to transmit rotation of the cylinder to mechanism to'be actuated and having an end portion extending into the casing for connection with Ythe cylinder, interen'gaging means on the cylinder and shaft portion received in the casing to afford a non-rotatable connection having a degree of relative universal motion between the shaft and cylinder, an annular slotted ila-nge extending rearwardly from the cyl inder with its inner Wall spaced from the shaft, and a torsion spring coiled about the shaft with its ends engaging the sides of the slot in the annular ange of the cylinder and also abutments on the casingv to yieldably maintain the cylinder in' a predeterminedposition of rotation with respect to the casing, and saidv springrreacting against the shaft to tend to hold the shaft at all times in an angular position with respect to the of the cylinder and thereby take up play in the connection between the shaft and the cylinderY and between the cylinder and its casing and the shaft and the bore in which it may be received.

13. In a lock, a rotatable cylinder, a shaft to transmit rotation of the cylinder to mechanism to be actuated, the cylinder having a recess opening to one end to receive the adjacent end of the shaft and having a substantially radial opening communicating with the recess and defining an `undercut shoulder within the mouth of the recess,

and a substantially radially projecting hook on the shaft to lie behind the shoulder in the cylin-I der recess to maintain the shaft connected with the cylinder.

14. In a lock, a rotatable cylinder having a recess opening to its inner end and having an opening communicating with the recess inwardly of its mouth to define a` shoulder, a shaft to transmit rotation of the cylinder to mechanism to be actuated, said shaft having an end portion loosely received in said recess so as to have a degree of universal `motion with'respect tothe cylinder,and a substantially radially projecting portion online-shaft engageable in rsaid opening communicatingwith Vthe cylinder -recess tomaintain the shaftiassembled with the cylinder.Y

15. YInaY lock, a rotatable cylinder having-an axial bore opening to its'inner end and having a radial opening communicating with Athe bore in-V wardly of Vits mouth, a shaft having an end portion loosely received in said bore, anda substantially radial projection on said end portion of the shaft disposed in said'opening to maintain the shaft detachably assembled with the cylinder, said-end portion ofi-the shaft and the radial projection thereon being respectively smaller than.

the bore and the opening communicating therewith to enable angular displacement of the shaft with respect to the cylinder for insertion and re-y moval of the shaft and to afford a degree of Vrela- Y with the cylinder, the rounded end of the shaft and theplay between the pin and its opening enabling removal of ythe shaft from its bore in Van angular position of the shaft with respect to the axis of the cylinder.

I7. In a lock. of the character described, aro-v tatable lock cylinder, a shaft to transmit rotation of the cylinder tofmec'nanism to be actuated, a substantially universalfjoint connection between the shaft and the cylinder which is readily detachable with the shaft in a predetermined angular position with respect to the cylinder, said connection comprisinga hooked end portion on the shaft having aportion non-circular in cross section and fitting in an undercut recess in the cylinder-,the mouth of which is of a shape corresponding to the non-circular cross section of the hooked end portion on the shaft, and a casing for the cylinder havingran extension adapted to encircle'the shaft and restrict its angular displacement with respect tothe cylinder to less than that treduiredi for detachment, while allowing lsaid shaft a degree of universal motion.

f EDWARD N. JACOBI.

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