US1151242A

US1151242A - Keyless lock.

Info

Publication number: US1151242A
Authority: US
Inventors: Maurice B Brand
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-08-19
Filing date: 1914-08-19
Publication date: 1915-08-24
Anticipated expiration: 1932-08-24

Description

M. B. BRAND.

KEYLESS LOCK.

- APPLICATION FILED Aue. I9. 1914.

Patented Aug. 24, 1915.

lll/111111111 III l/llllllllll/Illll//Aw 1 I IIIIII ||IIIII Y j A l l GR l 0 Vv HINGTO D 3 adapted to engage a bale sfrafrns i ra l MAURICE B. BRANI), OF CHICAGO, ILLINOIS.

KEYLESS LOCK.

Specification of Letters Patent.

Patented Auw. 2d, 1915.

Application led August 19, 1914. Serial No. 857,467.

ful linpi'oveiiients in Keyless Locks; and l Ado 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.

My invention relates to keyless or so-called combination locks, its general object being to provide a-simple and cheaply manufactured lock which may easily be manipulated for opening the same and which may also be easily re-set to a closure position.

A more specific Objectis to provide a lock having simple and effective guard and latch arrangements and adapted for use upon a milk-bottle holder, such as the one shown and described in my copending application filed June. 27, 1914, as Serial No. 847,627.

lVhile the locking mechanism of my invention may be used in a variety of positions and for many different purposes it4 is particularly adapted for such a purpose as the one shown in the above-mentioned application, and is shown in this embodiment in the accompanying drawings, in which- Figure 1 is a fragmentary sectional view through the lock and a portion of the milkbottle holder equipped with the same, with the mechanism in'its normal locking position. Fig. 2is a similar view showingthe latch as moved to effect a movement of the guard from its normal position. Fig. 3 is a similar view showing the position of the parts when the latch is in its releasing posi-y tion. Fig. 4 is a fragmentary horizontal section through the lock and milk-bottle holder along the line Ll--t of Fig. 1. Fig. 5 isa fragmentary plan view of the cover of the holder ,showing the actuating knob and the indicator carried thereby, together with the dial on the cover. Fig. 6 is an enlarge sectional view showing the spring means for preventing relative motion of the latch and the guard carried thereby.

In' the embodiment of the drawings, the locking mechanismof my invention is shown as applied to a latch consisting 'of a bar 1 slidably mounted in the casing 2 of a milk-.

bottle holder equipped with a movable cover 5, said latch being also equipped with a hook 6 suitably posi- Y of cam formations tioned within the said holder, the said latching member being normally pressed into the position shown in Fig. 1 by the engagement of a compression spring 7 with a shoulder 8 upon the latching member. T he said latchmg member has a bifurcated inner end 19 ext-ending through a slot in an auxiliary casing 10 housing portions of the mechanism of the lock. Pivotally mounted in the said casing 10 and extending through the top of the cover 5 is a shaft 11 equipped at its upper end with a knob 12 for manually rotating the said shaft and also equipped with a pointed indicator 13, which indicator c0- operates with suitably numbered figures on the outer surface of the cover to indicate the relative position of the rotating shaft, as shown in Fig. 5.

Rigidly mounted upon the shaft 11 and housed by the casing 10 is a disk 14;, the periphery of which disk is 'normally disposed close to (but out of contact with) the end 19 of the slidably mounted latching member, which end presents a shoulder 25, toward the adjacent edge of the disk. Formed from the disk 111 and extending radially therefrom at different heights above the plane of said disk are prongs 15 and 16. lvlovably mounted upon the latching member 1 (as for example by means of a pivot 17) is a guard 18, which guard also extends through the said slot in the auxiliary casing and is equipped at its inner end with a pair 19 and 20 extending at acute angles to the axis of the bar 1. The guard 1S is also equipped at the juncture of the said cam surfaces with a slot 21, which i slot is adapted to aline with a similar slot in the latching bar 1 when the guard is in a position in which its shank extends parallel to the axis of the bar 1, that is to say parallel to the cover of the-bottle holder. One of the forks presenting the said cam surfaces upon the guard is preferably equipped with a toe portion 22 adaptedv to abut against the bottom of the auxiliary casing 10 so as to afford a stop for limiting the relative movement of the guard about its pivotal mounting 17, the said movement being restricted by suitable friction means associated with the bar 1 and the latching member 18,

such as a spring 2 3. p l When the lock is to be operated so as to move the same from the locking position of Fig. 1 to the releasing position of Fig. 3,'

the latching bar rst slid slightly inwardly of the casing by pressing a finger against the free end of the said bar. If this sliding motion is undertaken with the mechanism in position of Fig. 1, the end 19 of the bar 1 will abut against the periphery of the disk 14, so as to prevent any step being taken toward the unlocking. However, if the dial. member of the lock has first been turned to bring the member 15 into alinement with the sliding vlatch member (as shown Yin both Figs. 2 yand 11, the slot produced in the periphery of the disk 14 by forming the prong 15 therefrom will permit the end 9 of thelatching member to be slid inwardly beyond the periphery of the disk 14., thereby bringing the prong 15 into forcible engagement with the cani surface 19, whereupon the said cam surface will cause the guard 18 to move about its pivotal mounting into the position of Fig. 2. rEhen upon releasing the, digital pressure on the free end of the bar 1, the spring 7 will protract the same, thereby drawing the end 9 of the latching member out of the said periphera'l opening in the disk under the prong 15. Now if the indicating member is further rotated so as to bring the lower prong 16 Yinto alineinent with the axis of the latching Vmember 1, this prong will then Vbe directly opposite to the said alined slots inthe guard and the latching member. Consequently,

upon' again digitally sliding the latching member 1 inwardly, the said alined slots will housethe prong 16 as shown in Fig. 3, thereby permitting lthe latching member to be slid sufficiently to release the bale 6, as also shown in FigaS, thus permitting the milkbottle holder to be opened. After the holder has been opened and again closed, it will be evident that the friction spring 23 would maintain the vguard in its releasing position; however, upon rotating the indicator so as 'to bring both of the

prongs

15 and 16 outof alinement with the axis of the latching member 1, and then digitally pressing the latter inwardly, the periphery of the disk 14 will r-engage the other of the said cam surfaces 20, thereby moving the guard 18 backto. its

original position as shown in Fig. 1.

While I have illustrated and described the look of my invention in a particular embodiment including a friction spring 23 and spiral spring 7, it will be evident that these and other details might be modified considerably without departing from the spirit of my invention. Thus, the relation between `the numerals at which the disk is operated may bevaried by tion lof the

prongs

15 and 16, as shown byY altering the relative posidotted lines in Fig. 4.

I claim as my invention: 'f 1. Aykeyless lock including a rotatable .disk equipped with a pair of radial prongs disposed at different elevations from the plane of said disk, a latching member'slidfdisk equipped with a pair of radial prongs slot normally out of alinement with the aforesaid slot,`said guard and the other ofv said prongs equipped with coperating cam formations coacting upon a sliding of the latching member to move said guard to bring said slots into alineinent, said latching member normally presenting toward the disk a shoulder adapted to engage the disk to prevent a sliding of the latching member. 2. A keyless lock including a rotatable disk equipped with a pair of radial prongs disposed at different elevations from the plane of said disk, a latching member slidably mounted with respect to said disk and equippedfat one engd with a slot adaptedv to span one of said prongs to permit a sliding of the latching member to its releasing position, and-with a shoulder adapted to abut against the periphery of the disk to prevent such a sliding of the latching'member when said slot Vand prong are knot in alinement; and a guard movable with respect to the latching member and normally substantially closing said slot; said guard and the other of said' prongs equipped with cooperating cam formations coacting upon va sliding of the latching member to move latching member. Y

3. A keyless lock including a rotatable disposed at `different' elevations from the plane ofsaid disk, a latching member slidioo l ably mounted with respect to said disk and Vequipped at one end with a slot adapted to span one of said prongs to permit a sliding said latching member and normally subiio i ofthe latching member to its/releasing posi-` t1on, and a guard pivotally mounted upon stantially Vclosing said slot, said Guard and .n

the other of said .prongs equipped with co-` operatingcam formations coacting upon a sliding of the latching member to move said guard outof its said slot-closing position; and spring means associated with said guard and latching member for frictionally interlocking the same to hinder a relativejinovement thereof. f

4. A keyless lock including a shaft, a rotatable ,disk carried thereby, a1 housing for said disk and the main portion of said shaft,A

a latching member extending through said substantially radially of said shaft housing and slidable with respect thereto, one end `ofsaid latching member presenting a shoulder adapted to'engage the peripheral poriso tion of said disk to limit the sliding of the latching member, and a guard member carried by said latching member and movable with respect thereto, said latching member equipped at the end nearest said disk with a slot normally guarded by a portion of said guard member, said disk equipped With a plurality of projections extending radially thereof in different planes from that of the main portion of the disk, and means carried by said guard and cooperating with one of said prongs to movel said guard out of the position in which it guards said slot, thereby permitting the slotted portion of the latching member to straddle the other o1 said prongs after the disk has been rotated to bring the last-named prong into radial alinement With the latching member.

5. A keyless lock including a rotatable disk, a. latching member slidable With respect thereto in a direction substantially radial of said disk and equipped at one end with a slot extending longitudinally of said latching member, a portion of said member at one side of said slot being adapted to abut against the periphery of the disk to prevent an attempted sliding of said latching member out of its latching position; said disk equipped upon its periphery with a recess adapted to be entered by the said abutting portion of the latching member and with a prong adapted to enter said slot inthe latching member when the said portion thereof is slid into the said recess; a guard carried by said latching member and movable with respect thereto and normally substantially closing said slot; said guard and disk equipped With cooperating formations co- Y acting, upon a sliding of the latching member, to move the guard out of its slot-closing position When the disk is in one position and to return the guard to its slot-closing position upon a sliding of the latching member When the disk is in another position.

6. A keyless lock including a rotatable disk, a latching member slidable with respect thereto in a direction substatiall-y radial of said disk and equipped at one end with a slot extending longitudinally of said latching member, a portion of said member at one side of said slot being adapted to abut against the periphery of the disk to prevent an attempted sliding of said latching member out of its latching position; said disk equipped upon its periphery With a recess adapted to be entered by the said abutting portion of the latching member and with a prong adapted to enter said slot in the latching member When the said portion thereof is slid into the said recess; a

guard carried by said latching member andk means associated With said guard and latching member for retaining said guard in either of its. said positions 'when moved thereto by the coaction of the said coperating formations.

7 A keyless lock including a rotatable disk equipped With a pair of radial prongs disposed at different elevations from the plane of said disk, a latching member slidably mounted with respect to said disk and equipped at one end with a slot adapted to span one of said prongs to permit a sliding of the latching member to its releasing position, and a guard movable With respect to said latching member and normally substantially closing said slot, said guard and the other of said prongs equipped with cooperating cam formations ooacting upon a sliding ofthe latching member to move said guard out of its said slot-closing position when the disk is turned to aline said last-named prong radially With said guard; said guard also equipped With a cam formation adapted upon asliding of the latching member to impinge against a peripheral portion of the disk, When said disk is in another position, to return the guard to its said slot-closing position.

In testimony whereof I have signed my name in presence of two subscribing Witnesses.

MAURICE B. BRAND.

Witnesses:

p ALBERT SCHEIBLE,

M. M. BoYLE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C.