US 1375134 A
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Description (OCR text may contain errors)
A. L. DAVIS.
APPl,lCATION man NOV. 15. 1919.
Patented Apr. 19, 192 1.
3 SHEETS-SHEET I.
I VAULT LOCK. APPLICATION FILED NOV-.15, 1919.
A Patented Apf. 19,1921.
SSHEETS-SHEET 2- .5.
A. L. DAVIS.
I VAULT LOC'K.
I APPLICATION FILED NOV-15,1919. l,375,134c. Patented Apr. 19, 1921.
V 3 SHEETSSHEET 3- lwwm and in which drawings:
; UNITE-ID israrss PATENT o F-ic-s.
ALBERT- L.v Davisor noRwALK; oHio."
means for locking and sealing the closure in position against accidental displacement.
Another object of the invention is the provision of an improved lock for vault closures, which is so constructed that ope-ration thereof is prevented after the door has been placed in closed position and locked.
A further object ofthe invention is the provision. of novel means for moving the connecting means of the lock bolts out of engagement with the bolt operating me'ans,
after such means have been operated to move the bolts to lockedposition.
A still further object of the invention is the provision of means for preventing retrograde movement'of the 'boltactuating means so as to absolutely prevent the unlocking of the closure.
A still further object of the invention is the provision of an improved grave vault lock, of the above character which is durable and efficient in use, one that is simple and easy to manufacture, and one which'can be placed upon the market at a reasonable cost. Otherobjccts of the invention will appear in the following detailed description taken in connection with the accompanying drawings, foi'cming a part of this specification,
Figure 1 is a rear elevation of the improved vault seal and lock, showing the-same in operative position on a vault, the vault being shown in section.
Fig. 2 is a'central vertical section through the vault'closu-re and lock,"showing the bolts in locked. position prior to being moved into inoperative position against further'action. Fig. 3 is a similarview showing the bolts moved into inoperative position and locked against further actuation.
r Specification of Letters Patent.
Patented Apr.'19, 1921.
Application filed November 15, 1919. Serial No. 338,176.
- Fig. 4 is an enlarged section taken on the line 4 4 of Fig. 3. Fig. 5'is a detail perspective view ofone of the bolts, and
Fig. 6 is a fragmentary detail side elevationof the bolt guide disk showing the same in locked position. 4
Referring to the drawings, in detail, wherein similar reference characters desig rate corresponding parts, throughout the several views, the letter A indicates the improved vault closure, which is adapted to be associated with a vault B. The improved vault closure or look includes the bolts 0, the boltactuating mechanism D and the lock E for the actuating member D. A
The vault B may be of he'ordinary or any preferred construction and formed of any suitable material and as shown includes the upper and lower walls 10'and11, and the side walls 12. The open end of the vault has secured to the upper, lower and side walls "adjacent to the outer end thereof, strips of angle iron 13, which form a means for limiting the inward movement of the vaultpclosure A. In the space between the closure A and the strips of angled iron 13 is a gasket formed of rubber or the like 14, which forms means to seal the vault when the vault closure is in its locked position. i
The approved door closure and look A includes a flat door plate 15 formed of metal or thelike andv suitably shaped so as to fit snugly within the vault. The-door plate 15 is secured to the upper wall 10 of the vault by a suitable hinge16'.
' The-door pla' te15 has slidably mounted'on the inner surface thereof the bolts C which are substantially triangular shaped in plan and formed from fiat metallic plates, as clearly shown in Fig. 5 of the drawings. The outer edge of each of the bolts'C is provided with inwardly extendingslots 18, which slidably receivethe T-shaped studs 19 riveted or otherwise secured to the door plate 15 adjacent to the outeredges thereof.
The inner ends of the bolts 0 are provided with slots 20, which are arranged parallel to theslots 18 formed in :the outer side edges of the bolts 0. The door plate 15 has also riveted or otherwise secured thereto adjacent the central portion thereof the inwardly extending guide pins 21 which are slidaloly received in the slots 20. The guide pins 21'- have coiled around the same the expansion springs 22, which are confined between the door plate 15 and the bolts C, and form means for normally urging the inner ends of the bolts C outwardly.
The pins 21 and the T-shaped studs 19 form means for permitting the sliding movement of thebolts C toward or away from the outer edges of the vault. The actuating mechanism D is *provided for moving the bolts G into or out of engagement with the outer surface of the strips or angle iron 13, and includes a shaft 23, which is rotatablyomounted in a centrally located aperture formed in the door plate 15. The shaft 23 isprovided with an enlarged smooth portion 24 and has keyed or otherwise secured thereto the operating disk 25, which engages the inner face of the door plate 15. The outer face of the door plate 15 is engaged by a flat annular flange 26 formed on the shaft and the same forms in connection with the disk 25 the means for preventing. twisting or swinging movement in the aperture. The extreme outer end of the shaft 23 is provided-with a polygonal extension 27, which forms means whereby the shaft may be engaged'by a suitable-tool to effect the rotation thereof. Inward movement of the disk 25 on the shaft 23 is prevented by an annular flange 28 formed on the shaft 23. The shaft 23 is continued inwardly of'the door plate 15 and the portion of the same lying beyond the flange 28 is provided with screw threads 29 for a purpose which will be hereinafter more fully described. This portion of the shaft is also provided with an inwardly extending slot 30 which terminates short of the screw threadedportion. The inner terminals of the bolts C at the apex portion thereof carry pins 31 which project inwardly toward the door plate 15.
The pins are provided with annular flanges 32 which prevent inward movement of the same on the bolts C. The inner face of the operating disk 25 is provided with a spiral or cam slot 33, the outer convolution of whichis formed substantially concentric with the shaft 23. The slot 33 is adapted to receive the inner terminalso-f the pins 31, so that upon rotation of the disk, the bolts C will be brought toward or away from the angle irons 13 as may be desired.
The outer ends of the pins 31 are provided with enlarged extensions 35 carrying T- heads 36, the purpose of which will be hereinafter more fully described. I
The means F provided for locking the actuating mechanism against further operation when the bolts C are in locked position includes a circular plate 37 which is provided wlth a central internally threaded bore 38 which is adapted to be threaded on pawl 4:0,which has the terminals thereof provided with opposite directed teeth 41, which are adapted to engage-upstanding lugs 12, having the upper faces inclined downwardly as at 43' so asto permit the pawl to slide over the same when rotated in one direction. The pawl 40 is held in engagement with theinner wall of the slot,30 by means of an expansion spring 4a, which is coiled around theshaft and has theinner end thereof in engagement with the outer surface of the pawl. a The coiled spring 44: is prevented from slipping off'of theshaft. by means :of the nut 45 whichalso, forms means for adjusting, the tensionoj of the spring. 14. The inner faces of the bolts 0 adjacent to the outer edge thereof areprovided with inwardlyv extending lugs 46, i
which form means for engaging the inner surface of the door plate 15 for-holding'the bolts in spaced-relation thereto- In operation of the improved device,when
it is desired to lock the door, a suitable tool suchas a wrench or the like is clamped upon the polygonal extension 27, and the shaft 23 is then rotated, which owing to the spiral or cam slot 33 having the pins 31 slidably mounted therein, forces the bolts C outwardly and into engagement withothe outer ed portions 29 of the shaft, which gradually Y brings'the pins 31 toward the outer end of the spiral or cam groove '33. When, the bolts C are intheir locked positions,- the pins 31 have been moved out of the slots 33. When it. is desired to position the lock mechanism so that operation thereof is prevented, the shaft 23 is further rotated so as to move the circular plate 37 outwardly on the shaft 23, which will carry the pins 31 out of engagement with the spiral or cam groove formed in the disk. As thecircular plate 37 gradually moves outwardly on the shaft 23, the expansion spring 44 is gradually compressed, which tensions the same so that the doublepawl 40 is forcibly held into contact with the outer face of the plate 37. As the shaft is rotated in a direction to move the plate 37 outwardly, the beveled 1 the shaft is tu-rnedin a reverse direction, so
as to move the tumbler plates inwardly, the
doublepawls40 engage the abrupt faces of the lugs 42 and thus prevent rotation of the plate. This effectively prevents operation of the lock to move the bolts C out of engagement with the angle irons 13 and thus the door is permanently held in its closed position.
From the foregoing description it will be seen that the improved vault door lock is provided which isso constructed that the door cannot be opened after once being placed in position or locked in place.
Changes in details may be made wlthout departing from the spirit or scope of my invention, but; i
1. The combination with a body having one end thereof opened, and a closure head for said opened end, of locking mechanisms carried by the closure head and includ ng a plurality of radially extending bolts sl1dably mounted on the head, an actuating element, means carried by the bolts for engaging said element, and means for moving said bolt engaging means out of engagement with said actuating means, when the bolts have been moved into locked position.
2. The combination with a body having an opened end and a closure head for said opened end, of locking mechanisms earned by the closure head including a plurality of bolts slidably carried by the head, a rotatable disk carried by the head, means for effecting the rotation of the disk, said d1sk having a spiral slot formed in its inner face, means carrled by the inner ends ofthe bolts, for engaging in said slots, and means for moving said bolt carried means out of engagement with the disk, after the bolts have been moved to locked position.
3. The combination with a body having one end thereof opened, and a closure head therefor, of locking mechanism carried by the closure head including a plurality of slidable bolts mounted on the head, a shaft rotatably carried by the head, an actuating member keyed to the shaft, pins carried by the inner ends of the bolts and adapted to engage the actuating member for moving the bolts into closed position, and means carried by said shaft for moving the pins out of engagement with the actuatlng means, after the bolts have been moved to locked position.
4. The combination with a vault body and j closure head therefor, of locking mechanism carried by the closure-head and including a pluralityof bolts slidably carried by the head, a shaft rotatably carried by the head, means for rotating the shaft, a disk keyed to the shaft having a spiral slot formed therein, pins carried by the inner ends of the bolts and adapted to engage in the spiral slot, so that 'upon'rotation of the diskin one direction, the bolts will bemoved toutwardly, and; means carried by said shaft :for engaging the pins to move the same out of ei'igagement with the spirallslots, after the bolts have been moved to locked position.
5. The combination with a body having an opened end and a closure head therefor, '15 of a locking mechanism carried by the 010- i sure head including a plurality of bolts, actuating mechanism carried by said head, means carried by the inner ends of the bolts for engaging said actuating means, a plate carried by the shaft for engaging said bolt carried means and adapted to move the same out of engagement with the actuating means when the bolts have been moved to closed position, and means to prevent movement of the plate in one direction after the bolt carried means have been moved out of engagement with the actuating means.
6. The combination with a vault body and closure head therefor, of a locking mechanism carried by the closure head including a plurality of slidable bolts carried by the head, a shaft rotatably carried by the head, a disk keyed to the shaft and having a cam slot formed therein, pins carried by the inner ends of the bolts and arranged to engage in said cam slot, a locking plate threaded on said shaft arranged to carry said pins, a pawl carried by the shaft, and outwardly extending teeth formed on the outer face of the plate and adapted tovbe engaged by the pawl.
7. The combination with a vault body and closure head therefor, of a locking mechanism carried by the closure head including a plurality of slidable bolts, guide pins for said bolts, springs coiled around certain of i said pins for normally urging the inner ends of the bolts inwardly, a shaft rotatably carried by the head, a disk keyed to the shaft 110 having-a spiral groove formed on the inner face thereof, the outer convolution of the groove being arranged concentric withthe axis of the disk, pins carried by the inner ends of the boltsiarranged to engage in said 115 groove, and a plate threadably mounted onsaid shaft for carrying said pins, outwardly extending teeth formed on the outer face of the plate, adouble ended pawl slidably carried by the shaft, and spring means for 120 normally urging the pawl into engagement with the teeth. a
8. A look comprising a plurality of bolts,
a cam, means carried by the bolts for'engaging the cam, said means arranged to move 125 the bolts to a locked position when the cam Y is operated, and automatic means for moving said bolt carried means out of engagement with the cam when the bolts have been moved to a locked position,
' 9[ A look comprising a plurality of bolts, a team disk, means carried by the bolts for engaging said cam disk, said means arranged to move the bolts to a locked posi- 5 tion .When' the cam disk is operated, means for moving said bolt carried means out of engagement with the cam disk when the bolts have been moved to a locked position, and means for preventing movement of said means for moving the bolt carried-means 10 out of engagementwith the cam after the bolts have been moved to locked position. l
ALBERT L. DAVIS. V