US2124736A - Lock - Google Patents

Description

E. N. JACOB! LOCK Filed Jan. 2, 1937 5 Sheets-Sheet 1 'N if Ejwfj M JEM@ July 26, 1938. N JACQB! .2,24-,736

LOCK

Filed Jan. 2, '1937 5 Sheets-Sheet 2 E. N. JACOBI July 26, M38.

LOCK

Filed Jan. 2, 1937 5 Sheets-Sheet 3 Patented July 26, 1938 UNITED STATES PATENT OFFlCE LOCK Application January 2, 1937, Serial No. 118,818

14 Claims.

This invention relates to improvements in locks and refers particularly to locks used on hand luggage. This type of lock generally comprises a hinged hasp attached to one of the two hingedly connected sections of the luggage, to swing into operative relation with a key controlled sliding bolt carried by an escutcheon plate secured to the other section.

Heretofore in locks of this character the bolt has had a button or handle member fixed thereto and exposed on the front of the escutcheon plate to provide means for manually retracting the bolt. To lock the bolt against unauthorized retraction a key controlled lock mechanism was secured to the back of the escutcheon plate in operative relationship to the bolt.

This construction entailed the provision of a casing or housingto enclose the lock mechanism, and for the sake of appearance the casing had to be secured in back of the escutcheon plate by concealed fastenings. Not only was this construction costly, but its appearance was still marred by reason of the necessary exposure of the rotatable key receiving cylinder on the front of the escutcheon plate in addition to the button or handle provided for retracting the bolt.

With these and other objections to past and existing locks of this type in mind it is an object of this invention to provide a construction wherein a neatly nished head of a conventional lock cylinder constitutes the only exposed operating part on the front of the escutcheon plate and wherein no necessity exists for a back housing and its concealed fastenings.

A more specific object of the invention is to so connect or join the lock cylinder and sliding bolt that upon the establishment of the connection therebetween these elements are properly held assembled with the escutcheon plate.

It is also an objct of this invention to so join the lock cylinder and bolt that the connection therebetween remains undisturbed as long as the bolt moves Within its normal limits of motion so that unintentional disassembly of the parts is prevented.

It is also an object of this invention to provide a lock of the character described wherein the key operable tumblers carried by the cylinder are utilized to secure the lock cylinder against bolt retracting movement.

A further object of this invention is to provide a lock of the character described wherein the connection between the cylinder and bolt is maintained by the bolt spring.

With the above and other objects in View which will appear as the description proceeds, this invention resides in the novel construction, combination and arrangement of parts substantially as hereinafter described and more particularly dened 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 one complete example of the physical embodiment of the invention constructed according to the best mode so far devised for the practical application of the principles thereof, and in which:

Figure lis a front view of a lock embodying this invention and illustrating its application to a 15 hand luggage case;

Figure 2 is a back View of the lock;

Figure 3 is a longitudinal sectional view taken through Figure 2 on the plane of the line 3 3;

Figure 4 is a cross sectional view taken through Figure 3 on the plane of the line 4 4 with the bolt omitted and shown in construction lines;

Figure 5 is a transverse sectional view taken through Figure 2 on the plane of the line 5 5;

Figure 6 is a perspective View of the bolt;

Figure 7 is a perspective view of the escutcheon plate illustrating the back thereof; and

Figure 8 is a perspective view of the lock cylinder.

Referring now particularly to the accompanying drawings in which like numerals designate like parts throughout the several views, the numerals 5 and 6 designate the two hingedly con* nected sections of a conventional hand luggage case of the type with which the lock of this in- 35 vention is generally used.

The lock, indicated generally by the numeral l, comprises a hasp 8 hinged to the back 5 and arranged to swing down over an escutcheon plate 9 attached to the section 6. As is customary the hasp 8 has a staple I0 adapted to project through a hole Il in the escutcheon plate to receive the operative end or nose l2 of a bolt I3. So that the hasp may be snapped into its operative posi tion, the staple and also the operative end I2 of the bolt are beveled.

The bolt is a stamping with the major portion thereof lying in a common plane. Its operative end or nose I2 projects from the main body i4 which is substantially rectangular and lies hat against the back of the escutcheon plate.

Partially at least, the bolt is guided in its rectilinear motion by the sliding engagement of its nose I2 in an opening l5 in a flange struck rearwardly from the escutcheon plate along one edge of the opening I I.

The main body of the bolt is centrally cut away so that it forms substantially a rectangular frame composed of two side rails I6 and I1 joined by cross rails or ends I8 and I9. The end I8 carries the nose or point ofthe bolt.

The opening defined by the frame-like main body of the bolt receives a lock cylinder 28 which projects through a hole 2I in the escutcheon plate.

Inward endwise movement of the lock cylinder through the hole 2I is prevented by an enlarged head 22 on the outer end of the cylinder which overlies the iront of the escutcheon and is of a size to close the hole 2I at all times, even though the cylinder is shiftable sidewise by the application of force on the head 22 to retract the bolt as will be hereinafter more fully described. It is to be observed that the cylinder head 22 forms the only protrusion above the front face of the escutcheon plate.

As stated the head 22 limits inward endwise movement of the cylinder. Outward endwise movement of the cylinder is restrained by a connection between the cylinder and the bolt in back of the plate. This connection may be made and broken only when the bolt is at its extreme limit of retraction, a position lying beyond the normal limit of its retraction stroke. The connection between the cylinder and bolt is formed by a part 23 integral with the side I6 of the bolt engaging in a groove 24 in the side of the cylinder. The part 23 is so proportioned that it can be engaged and disengaged with the groove 24 only when the bolt is at the extreme limit of its retraction.

The bolt ls restrained against movement to this position of retraction by a hairpin spring 25, one leg of which is fastened to the bolt as at 26 and the other leg of which bears against a shoulder formed by a rearwardly projecting curved flange 2'! struck back from the escutcheon plate. Preferably, although not necessarily, the leg of the spring which engages this curved ange 21 is oiifset so as to lie flat against the back of the eseutcheon plate and positively block mov'ement of the bolt to its eXtreme limit of retraction by engaging the inner edge of its end portion I8. The engagement of this inner edge with the curved ange 21 denes the extreme limit of retraction of the bolt. Hence, it is necessary to unhook the spring 25 when it is desired to disassemble the parts.

The curved iiange 21 denes a portion of the periphery of the hole 2i and is concentric to the cylinder when the cylinder is in its normal inactive position. The opposite edge of the hole 2| limits the bolt retract-ing movement of the cylinder as will be hereinafter more fully described.

It will be observed that the hole 2I is large enough to permit bodily sidewise sliding movement of the cylinder in the direction of bolt movement, the limits of this sliding movement being dened by the edge of the hole 2I opposite the curved ange 21 and by the engagement of the cylinder with a ward or lug 28 struck rearwardly from the escutcheon plate adjacent one end of the curved ange 21.

The ward or lug 28 is wide enough to engage the adjacent inner edge of the side rail I1 of the bolt in a guiding action. 'I'his engagement between the ward or lug 28 and the side rail I1 of the bolt together with the engagement of the part 23 with the bottom of the slot 24 in the cylinder and the guiding eiect of the nose I2 in the opening I5 constrains the bolt to the desired rectilinear motion to and from its operative position, in a plane normal to the aXis of the cylinder.

The bolt is limited in its spring propelled motion by the engagement of a lug 29 struck up from the end I9 of the bolt adjacent its junction with the side rail I1, with the side of the cylinder as clearly shown in Figure 2, the cylinder being held by its engagement with the ward 28.

By Virtue of the abutment of the lug 253 against the side of the cylinder it is possible, through the application of force on the head oi the cylinder, to slide the cylinder, and, consequently, the bolt in a direction to effect retraction of the bolt. However, key operable tumblers 33 carried by the cylinder secure the same against bolt retracting motion as long as the cylinder is in its locked position of rotation, as best shown in Figure 2.

The limits of the cylinders rotation are dened by the engagement of a stop lug 3i formed on the cylinder directly beneath its enlarged head 22, with the inner edge of the ward or lug 23 or the adjacent portion of the escutcheon plate and a shoulder 32 formed in the peripheral edge or" the hole 2l, as shown in Figure fl. These stops cooperate to limit the rotation of the cylinder to When the lug SI engages the shoulder 32 the tumblers 30 are in position to engage a stop abutment 33 formed by a ward struck from the escutcheon plate. To accommodate this ward 33 the adjacent part of the side rail I1 of the bolt is cut away as at 34, and for a purpose to be hereinafter described the ward 33 is stepped as at 35 so that only its outer end portion lies close to the wall of the cylinder, this outer end portion being of suflicient length to engage the three tumblers.

It is also to be observed that the curved flange 2'. is stepped as at 36 to dispose its outer portion close to the wall of the cylinder and at the same time provide passage for the stop lug 3 I.

When the cylinder is in its locked position of rotation, shown in Figure 2, and its tuniblers engage the ward 33 they coact with the engagement of the stop lug 3i with the shoulder 32 to secure the cylinder against bolt retracting movement.

Upon retraction of the tumblers by the insertion of a proper key 31 and rotation of the cylinder to its unlocked position defined by the engagement of the lug 3| with the ward 28, the cylinder is freed for bolt retracting motion.

Upon withdrawal of the key from the cylinder in its unlocked position of rotation the projecting ends of the tumblers engage in back of the lug 29 to secure the cylinder against retrograde rotation. With the cylinder turned to this position the bolt may be retracted by pressing the head of the cylinder in a direction away from the hasp. The range of this bolt retracting motion, as hereinbefore noted, is limited by the engagement of the cylinder with the edge of the hole ZI opposite the curved ange 21, this degree of motion being just suiiicient to retract the nose of the bolt from the staple or the hasp without withdrawing the bolt from the opening I5.

It is to be observed that while retraction of the bolt may be effected by manually shifting the lock cylinder as described, it is also possible to retract the bolt independently of the cylinder as in snapping the hasp 8 to its operative position.

While the engagement or the bolt part 23 in the groove 24 of the cylinder is suffcient to maintain these elements assembled as long as the bolt is not moved to the extreme limit of its retraction, it is desirable to provide additional assurance against forced outward endwise displacement of the cylinder. To this end the innermost tumbler overlies a tongue 38 on the bolt. The tongue 38 is offset-as best illustrated in `Figure 6, to be positioned directly beneath the innermost tumbler, and to provide the clearance Ato allow the bolt to move to the limit of its retraction stroke, the tongue 38 is spaced from the vbody of the side rail l1 by part of the opening 34 so that the tongue 38 can move under the oiset 35.

The cylinder is steadied and guided for rotation through the coaction of the ward or lug 29 and the outer end portions of the ward 33and the curved flange 21, all of which lie suiiiciently close to the wall of the cylinder to have a guiding effect thereon.

From the foregoing description takenin connection with the accompanying drawings it ywill be apparent to those skilled in the pertinent art, that this invention provides a lock especially adapted for use with hand luggage, which by reason of its simplicity and improved construction not only permits cheaper manufacture but also provides a more positive and secure lock and a more pleasing appearance.

What I claim as my invention is:

l. In a lock of the character described: asliding bolt; means for constraining the bolt to a dened motion toward and from an operative position; a spring for yieldingly urging the bolt yto its operative position; a lock cylinder; means mounting the lock cylinder `for bodily sidewise movement in the direction of movement of the bolt and with respect to ts mounting means; and a connection between the lock cylinder and the bolt for retracting the bolt uponsuch 'sidewise movement of the cylinder inone direction and for retaining the cylinder assembled with its mounting means.

2. In a lock of the character described: :asliding bolt; means for constraining the bolt to a defined motion toward and from an operative position; a spring for yieldingly urging the bolt to its operative position; a lock cylinder; means mounting the cylinder vfor bodily sidewise movement in the direction of movement of the bolt and with respect to its mounting means; means for locking the cylinder immovably; `and a connection between the lock cylinder and the bolt for retracting the bolt upon such sidewise movement of the cylinder in one direction, said connection allowing retraction of the bolt independently of the lock cylinder.

3. In a lock cylinder of the character described: a sliding bolt; a spring yieldingly urging the bolt to its operative position; a lock cylinder; means mounting the cylinder forbodily sidewise movement; a connection between the bolt and the lock cylinder whereby such sliding movement of the lock cylinder in one direction retracts the bolt, said connection retaining the lock cylinder assembled with its mounting means; and key controlled tumblers carried by the cylinder engageable with a xed abutment for securing the cylinder against bolt retracting movement.

4. In a lock cylinder of the character described: a sliding bolt; a spring yieldingly urging the bolt to its operative position; a lock cylinder; means mounting the cylinder for bodily sidewise movement; a connection between the bolt and the lock cylinder whereby such sliding movement of the lock cylinder in one direction retracts the bolt; and key controlled tumblers car- 'riedfbythe cylinder engageable with a xed abutment for securing the cylinder against bolt retracting movement, said connection allowing retraction of the bolt independently of the cylinder. i

5. In a lock of the character described: an escutcheon plate having a hole therethrough; a bolt slidable across the back of the plate; a lock cylinder Ybodily movable in said'hole in the direction of sliding movement oi the bolt; radial key retractible tumblers carried by the cylinder and engageable with a part of the escutcheon plate to lock the cylinder against movement in said hole; `a part on the lock cylinder overlying fthe front of the escutcheon plate to limit inward jmovement of the cylinder and provide means I'for-manually shifting the cylinder; and a connection between the cylinder and bolt in back of v the -plate restraining outward Amovement of the cylinder to thereby maintain the cylinderv Vand bolt assembled with the plate, said connection enabling retraction of the bolt by bodily movement of the cylinder in one direction.

6. In a lock of the character described: an

escutcheon plate having a hole therethrough; a

Yin one direction; a iixed abutment carried by the plate; and key operable tumblers carried by vthe cylinder and engageable with said abutment to secure the cylinder against bolt retracting movement.

7. In a lock of the character described: an escutcheon plate having a hole therethrough; a

lbolt slidable across-the back of the plate; means vfor yieldingly projecting the bolt to an operative position; a rotatable lock cylinder disposed in the hole land movable bodily sidcwise therein in the direction of bolt movement; a connection between the cylinder and bolt whereby bodily sliding movement of the cylinder in one direction `retracts the bolt; means for defining the normal limits of rotation of the cylinder; a fixed stop abutment carried by the escutcheon plate; and key operable tumblers carried by the cylinder engageable with said stop abutment and cooperable with the rotation limiting means for securing the cylinder against bolt retracting movement.

8. In a lock of the character described: an escutcheon plate having a hole therethrough; a lock cylinder rotatable and sidewise slidable in said hole; a part on said cylinder overlying the iront of the escutcheon plate to hold the cylinder against inward endwise movement; a latch bolt slidable across the back of the escutcheon plate to and from an operative position; a connection between the lock cylinder and the bolt in back of the escutcheon plate, said connection holding the escutcheon plate confined between the bolt and said part on the cylinder to thereby maintain said elements assembled; the bolt and cylinder portion providing said connection being so related as to necessitate a predetermined relative -disposition of said elements` to permit assembly and disassembly thereof; and a bolt spring yieldingly urging the bolt to its operative position and yieldingly restraining the bolt against movement to said position permitting its disassembly from the cylinder.

9. In a lock of the character described: an escutcheon plate having two spaced holes therethrough; a bolt slidable across the back of the plate; said bolt having an end portion adapted for latching engagement with a part inserted into one hole; a rotatable lock cylinder sidewise shiftable in the other hole when in an unlocked position of rotation; key retractible tumblers carried by the cylinder engageable with a part of the escutcheon plate for securing the cylinder in a locked position of rotation; a connection between the lock cylinder and the bolt whereby sidewise shifting of the lock cylinder retracts the bolt; and a part on the lock cylinder exposed on the front of the escutcheon plate to provide means for imparting bolt retracting motion to the lock cylinder.

10. In a lock of the character described: an escutcheon plate having two spaced holes therethrough; a bolt slidable across the back of the plate; said bolt having an end portion adapted for latching engagement with a part inserted into one hole; a rotatable lock cylinder sidewise shiftable in the other hole when in an unlocked position of rotation; a tumbler stop on the escutcheon plate; key operable tumblers carried by the lock cylinder to engage said stop and secure the cylinder in a locked position of rotation; a connection between the lock cylinder and the bolt whereby sidewise shifting of the lock cylinder retracts the bolt; and a part on the lock cylinder exposed on the front of the escutcheon plate to provide means for imparting bolt retraoting motion to the lock cylinder.

1l. In a lock of the character described: an escutcheon plate having two spaced holes therethrough; a bolt slidable across the back of the plate; said bolt having an end portion adapted for latching engagement with a part inserted into one hole; a rotatable lock cylinder sidewise shiftable in the other hole when in an unlocked position of rotation; a tumbler stop on the escutcheon plate; key operable tumblers carried by the lock cylinder to engage said stop and secure the cylinder in a locked position of rotation; a tumbler stop on the bolt engageable by the tumblers to secure the cylinder in an unlocked position of rotation; a connection between the lock cylinder and the bolt whereby sidewise shifting of the lock cylinder retracts the bolt; and a part on the lock cylinder exposed on the front of the escutcheon plate to provide means for imparting bolt retracting motion to the lock cylinder.

12. In a lock of the character described: an escutcheon plate having two spaced holes therethrough; a bolt slidable across the back of the plate; said bolt having an end portion adapted for latching engagement with a part inserted into one hole; a rotatable lock cylinder sidewise shiftable in the other hole when in an unlocked position of rotation; cooperating means on the escutcheon plate and the cylinder for defining the limits of rotation of the cylinder; a tumbler stop on the escutcheon plate; key operable turnblers carried by the lock cylinder to engage said stop and secure the cylinder in a locked position of rotation, the engagement of the tumblers with said tumbler stop cooperating with the rotation limiting means to secure the cylinder against sidewise shifting; a connection between the lock cylinder and the bolt whereby sidewise shifting of the lock cylinder retracts the bolt; and a part on the lock cylinder exposed on the iront of the escutcheon plate to provide means for imparting bolt retracting motion to the lock cylinder.

13. In a lock of the character described: an escutcheon plate having two spaced holes therethrough; a bolt slidable across the back of the plate; said bolt having an end portion adapted for latching engagement with a part inserted into one hole; a rotatable lock cylinder sidewise shiftable in the other hole when in an unlocked position of rotation; a head on the cylinder extending over the edges of the hole to prevent inward endwise displacement of the cylinder` and facilitate sidewise shifting of the cylinder; and a connection between the lock cylinder and the bolt, said connection restraining the cylinder against outward endwise displacement so as to cooperate with the cylinder head to maintain the cylinder and bolt assembled with the escutcheon plate and said connection translating the sidewise shifting of the lock cylinder into retraction of the bolt.

14. In a lock of the character described: an escutcheon plate having two spaced holes therethrough; a bolt slidable across the back of the plate; said bolt having an end portion adapted for latching engagement with a part inserted into one hole; a rotatable lock cylinder sidewise shiftable in the other hole when in an unlocked position of rotation; a head on the cylinder extending over the edges of the hole to prevent inward endwise displacement of the cylinder and facilitate sidewise shifting of the cylinder; a connection between the lock cylinder and the bolt, said connection restraining the cylinder against outward endwise displacement so as to cooperate with the cylinder head to maintain the cylinder and bolt assembled with the escutcheon plate and said connection translating the sidewise shifting of the lock cylinder into retraction of the bolt; and a spring acting on the bolt to maintain said connection and yield' ingly urging the bolt to its latching position.

EDWARD N. JACOBI.

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