US874712A - Seal-lock. - Google Patents

Description

t No. 874,712. PATENTED DEC. 24, 1907.

B. TYDEN.

SEAL LOCK.

APPLICATION FILED JUNE 11. 1906'.

' 2 SHEETS-SHEET 1.

Fig.1

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No. 874,712. PATENTED DEG. 24, 1907. E. TYDEN.

. SEAL LOCK.

1 APPLICATION FILED JUNE 11. 1906.

2 SHEETS-SHEET 2.

EMIL TYDENOF HASTINGS, MIGHIGAN.

I SEAL-LOCK.

Specification of Letters Patent.

Patented Dec. 24, 1907.

Application filed June 11. 1906. Serial N01 321,092.

To all whom it may concern.

Be it known that I, EMIL TYDEN, a citizen of the United States, residing at Hastings, in the county of Barry and State of Michigan, have invented new and useful Improvements in Seal- Locks, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

This invention relates to a class of locks adapted to be used for securing the closuresdoors or coversof boxes, cabinets, cars and apartments so that a rupturable seal may be applied which shall be removable only by rupture, and which will necessarily be ruptured in the forcible opening of the closuredoor or cover.

It consists in the features of construction shown, described and set out in the claims.

In the drawings :Figure 1 is a plan view of a portion of the lid of a box secured by a lock embodying the invention. Fig. 2 is a section at the line 22 on Fig. 1. Fig. 3 is a section at the line 3-3 on Fig. 1. Fig. 4 is a view similar to Fig. 3 so far as the lock is concerned, the cover being removed and the locking bolt being shown in position for opening the closure. Fig. 5 is a detail section at the line 5-5 on Fig. .3 showing the bolt turned for disen aging thecatch nose to permit the coverto e lifted. Fig. 6 is a plan view of portion of a box having the lid secured by a seal lock embodying a modification of the invention shown in the preceding figures. Fig. 7 is a section at the line 77 on Fig. 6. Fig. 8 is a section at the line 8-8 on Fig. 7. Fig. 9 is a view similar to Fig. 7 showing the parts in position for receiving the seal, the lid being closed but securing the bolt at unlocked position.

In the drawings, 1 represents one side Wall of the box, cabinet or apartment to be secured by a cover or door represented at 2. The lock whose case or bolt-supportin element, 3, is-shown secured to the wal 1, comprises in addition to said case, 3, a bolt 4, and as ring, 5.

6 is a p ate secured to the door or cover, 2, having an aperture, 6, through which the head of the bolt passes when the door or cover is closed. The head of the bolt which thus extends through the aperture, 6, is an L-shaped hook, 4, whose reversed terminal, 4", is adapted to pass throu h a hole, 7*, in

the rupturable seal, 7, and t ence. to extend backt rough the aperture, 6, in the late, 6, for retaining the seal when the b0 t is in locked position. The bolt head has also a sloping-faced tooth, 4:, having an abrupt shoulder or face toward the plate, 6, and seal, 7, and adapted to overhang the margin of the aperture, 6 of the plate and 7 of the seal, and thus to engage the cover or door, 2, to prevent its accidental opening when no seal is present, and also to relieve the seal of the rupturing strain which would result from any movement tending to 0 en the door if it were not thus engaged by the said tooth. The outer face of the tooth, a9, is sloped for encounter with the under edge of the aperture, 6*, of the plate or of the corre sponding aperture in the cover when the latter is closed. The sprin 5, is a flat piece of steel secured at one en to the case and having the, other end bearing laterally against the side of the bolt, and the bolt is cutaway at one side forming an abrupt shoulder, 4 and a plate bearing surface, 4,

for the spring. The position of the cut away surface, 4 of the shoulder, 4, with respect to the hook head, 4*, of the bolt isv such that the bolt head is in position shown in Fig. v1 adapted to register with and enter the aperture, 6*, of the plate, 6, when the 5 ring is .lodged on the face, 4 and above the. shoulder, 4, of the bolt. In this position the de-' vice operates as a simple s ring catch.

The vtooth, 4, of the b0 t head being encountered by the margin of the a erture, 6,

as the cover is closed, and the b0 t being defiected by such encounter sufiiciently to permit the tooth to pass through the aperture, the pressure of the flat spring, 5, against the flat face, 4 of the bolt exerting an elastic pressure upon the bolt, tends to resist the turning movement and retract the bolt back through the angle through which it is turned while the tooth is passing through the aper ture, and by such retraction brings the tooth back into position for engagement outside the plate overhanging the margin of the aper 'ture. In this position the terminal, 4', of

the bolt, as stated, extends back through the a erture, 6*. When a seal is to be applied t e bolt will be turned quarter wa around to the position shown in Fig. 4 and t en with drawn len thwise until stopped by the crosspin, 4*, w 'ch is set through its lower end and stops a ainst the lower end of the 0 .80 or bearlng rame, 3. In this position the. end of the spring, 5, bears against the cylindrical surface of the bolt below the shoulder, 4 and the bolt being now turned back into normal position, as shown in dotted line in Fig. 4, t e cover may be closed, the head of the bolt registering with the" aperture, 6*, and passing through it, and a seal, 7, being laid on the upper side of the plate with its aperture, 7, in position under the end of the terminal, 4 the bolt may be thrust inward, the terminal passing through the aperture of the seal, and the spring sna ping above the shoulder, 4 preventing the longitudinal withdrawal of the bolt and thus securing the seal. The seal, by its extent over the plate,

6, across the aperture, 6*, and by the fact that the aperture, 7 is not large enough to permit the tooth, 4, of the bolt head to pass through it;prevents the opening of the cover,

even when the bolt is sprung aside to disengage the tooth, 4", from the plate, because to pass through the aperture the tooth would have to tear away the portion of the seal around the aperture, 7 thereof which overlies the aperture, 6*, under the abrupt shoulder of the tooth. Such rupture of the seal would disclose the fact that the cover had been forcibly opened. in order that the seal may be readily ruptured by one authorized to do so, a slit, 7 extends from the aperture, 7 nearly to the edge of the seal, so that it is readily ruptured at the end of the slit. 1 The seals are preferably made of thin sheet metal, as tin, or they may be made of card of suitably tough texture, For the purpose of securing the bolt at the position shown in dotted line in Fig. 4, that is, the position at which the cover may be shut 'down to engage with it before applying the seal and leaving it in position to receive the seal, the bolt has a notch, 4 on the side opposite the flat seat, 4 and shoulder, 4 and this notch is adapted for engagement with theedge of the upper bearing of the bolt at 2*, and is forced-into such engagement by the spring actin at the opposite side when the bolt is withdrawn to the position shown .in dotted line in Fig. 4.

In Figs. 6 to 9 inclusive, there is shown a modified form of lock embodying the same invention as defined by certain characteristic features. In this form, the case of the lock may be made from two pieces,the piece, 11, of sheet metal struck up in a die to form a box, and having formed upon it, protruding inwardly with respect to the box cavity, bosses, 12 and 12, upon which, respectively, are mounted within the case the two elements of the lock consisting of the bolt, 13, and the dog, 14. The other piece of the case, 15, is apl'ate, whichmay have corresponding bosses, 16, of which one is seen in Fig. 8, struck up on the face which is to be the inner face when the two arts of the case are secured together, so t at the two pieces meet head to head, and they may serve as the means of securing the two pieces of the case together by short bolts or screws, 18, 18,

which will be completely inclosed within the recesses or cavities formed by striking up the bosses. The two plates of the case may also be secured by the olts which secure it to the inner side of the box taking through the flanges, 19, 19, of the first mentioned part and through the corresponding margins of the plate, 15. j A lug, 21, is struck up from the plate, 15,-opposite the lower end of the dog, 14, and the dog has a centering boss, 14, facing the lug, 21, for lodgmentof a coil spring, 22, which shall react between thetail of the dog and the lug, 21, tendin to force the head, 14", of the'dog toward 51c proximate edge of the bolt, 13, which is,provided with a recess or notch, 13, for engagement of the nose ofthe dog and a sloping projection forming the under side of said notch and the approach thereto, so that when the bolt is pushed from the elevated position shown in Fig. 9, the dog, whose nose, 13, is held against the edge of the bolt by the spring, is crowded back over the sloping approach and is thrust by the reaction of the spring into the notch or recess, 13 for securing the bolt at locking position shown in Fig. 7 The head of the bolt which protrudes from the case is in the form of a hook, 17, of which the end, 17, projects back in the direction of the lengt hereinafter explained. This hook. head is adapted to enter the bolt aperture,'6, of'the bolt-receiving plate or hasp plate, 6, which of the bolt-for engaging the seal as is mounted upon the outer side of thecover or otherwise suitably secured thereto. At the edge of the bolt opposite that from which the hook, 17, projects, it has preferably a sloping nose, 17", which is encountered by the margin of the bolt aperture, 6, as the plate, 6, is closed down over the bolt; and in such encounter with the upper sloping edge of the nose, 17 the bolt is-forced edgewise against the pressure of the spring-pressed dog, 14, to permit the plate to pass over the nose, the spring-pressed dog forcing the bolt back to normal position at which the nose, 17 overhangs the margin of the bolt'aperture and engages the plate, 6, for preventing the accidental disengagement and opening of the cover. The case element, 11, has an aperture, 11, in position to permit the finger of the o erator to be inserted back of the tail of the dbg, 14, for pressing the dog against the tension of the spring to disen a e its nose, 14", from the aperture, 13 o t e bolt, so that the bolt may be drawn longitudinally a distance which is permitted by the length of the slot, 13", ofthe bolt, by which the bolt is engagedwith the boss, 12, of the case. The dog being released from the pressure of the finger as soon as the bolt is started away from bolt opposite the dog to become engaged crane "withthe edge wall, 1 1 of the case at the end case.

margin of the bolt aperture, 11, therethrough, and the bolt is thus. retained at withdrawn position until released by the operator.

, It will'be observed. that the lock above described operates as an automatic catch for holding the, cover of a box or a hasp which may fasten such cover, and that it is adapted 'to be released at will for opening the box. The specialpurpose for which certain features are provided, however, is to adapt the lock to cooperate with a rupturable seal to prevent the box from being 0 ened, except in such manneras to rupture t e seal unless the latter has been-first independently rup tured and removed. For this purpose, 1 cm loy a seal, 20, which is a disk, preferably, of t in sheet metal, having an aperture, 20*, of suitable size to be entered by the terminal, 17, of the hook, 17, of the bolt. A slot or rift is made from the aperture, 20*, of the seal nearlyto the margin, so that it may be .easily ruptured at the end of the rift at the margin. The seal is applied by withdrawing the bolt, as above described, until the notch, 13, becomes engaged with theedge of the At this position the end of the terminal, 17, of the bolt hook is above the upper surface of the plate, 6, andthe seal disk may be passed under it and up onto the terminal, 17, which will enter the a erture, 20. The

bolt being new disengage at the notch, 13*,

from the case and pushed inward, will be locked to the dog, 14; and the case being within the box and the aperture, 11, being inaccessible, there is no means for disengaging the bolt from the dog to permit the be t to bedrawn upward again for releasing the seal, and any attempt to open the cover forcibly will rupture the seal it persisted in sufiiciently to open the cover.

It will be obvious that this seal lock may be applied and operated in the manner described in any position or situation in which the door, cover or closure of any sort which is retained by the bolt prevents access to the aperture, 11*, of the case through which alone the do can be reached for disengaging the b0 t, and Ldo not limit myself to any particularsituation orcharacter of device, whether box, cabinet or other inclosed room or receptacle.

1 claim 1. A seal lock comprising a bolt which is mounted for two movements, one longitudinal and the other transverse to the longitudinal'movement; an element which adapted to be engaged by the bolt in said transverse movement for securing a closure said bolt having ,means for engaging such element; a rupturable seal lodgedln position ob'struct ing'movement of said elements for opening the closure, the bolt having means engaging the seal by longitudinal movement of the bolt inward for retaining theseal in such obstruct.- ing position, and automatic means engaging the bolt to retain it at such seal-retaining position.

2. A seal lock comprising a belt which has two movements, one longitudinal and the other transverse thereto said bolt being provided with'mean's for engaging a-closure; a closure which is engaged in said transverse movement of the bolt and a rupturahle seal,

lodged outside the closure and obstructing the opening movement of the latter, the bolt having means for'engaging the seal bylongitudinal movement of the bolt inward and auto.- -rnatic means engaging and retaining the bolt at the limit of such inward movement.

3. In a seal lock comprising a bolt which is mounted for two movements, one longitudinal and the other transverse to the longitudinal movement, an element which is adapt ed to be engaged by the bolt in said transverse movement for securing a closure said bolt having means for engaging such element; aspring which reacts to cause such movement; a rupturable seal lodged in position obstructing the movement 'of said elementfor opening the closure, the bolt having means for engagin the seal by longitudinal movement of the bit inward for retaining the seal in such obstructing position, saidspring'being ada ted for engaging the bolt to retain it, at sea -1"etaining position. I

4. A seal lock comprising a bolt which has movement of the bolt; a spring which reacts to causesuch movement; a rupturable seal lodged outside the closure and obstructing the movement of the latter, the bolt having means for engaging the seal by longitudinal movement of the bolt inward, and being adapted also for engagement by the spring for retention thereby at the limit of such in-v ward movement.

I 5. A seal lock comprising a bolt which is mounted for two movements, one longitudinal and the other transverse thereto; a plate which is apertured to permit the bolt to be thrust through it, the bolt having a projection which engages the margin of the aperture b the transverse movement of the bolt after it is thus thrust through the plate to secure the plate against movement relative to the bolt; a rupturable seal lodged in osition obstruct- 1 ing such movement of the p ate, the bolt having means engaging the seal b inward longitudinal movement of the b0 t and adapted by such engagement to retain the seal in said 0 structing position, and automatic means engaging the bolt to retain it at such sealretaining position.

6. A seal lock comprising a bolt which has two movements, one longitudinal and the &

other transverse thereto a plate which is to be locked by the bolt, having an aperture through which the bolt is thrust in the movement of the plate to osition at which it is to be secured by the bol the bolt having a projection which engages the margin of the aper ture of the plate by the transverse movement of the bolt after it is thus thrust through the plate; a ru turable seal lodged outside the plate and o structing the opening movement of the latter, the bolt having means for engaging the seal by longitudinal movement of the meme bolt inward after its said transverse move ment for engaging the plate by the projection, and automatic means engaging .and re- 15 of June, A. 1)., 1906.

EMIL TYDEN,

Witnesses:

M. L. Coon, A. A. ANDERSON.

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