US536844A - Padlock - Google Patents

Description

(No Model.) 2 Sheets-*Sheet l.

W. F. TRoAsT.

PADLOGK.

` No. 5:56,@4.` Patented Apr. 2, 1895.

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(N0 Model.) l 2 Sheets-Sheet 2.

Wj F. TROAST.

PADLOGK.

No. 536,844. Patented Apr. 2, 1895.

lllllHIilll L Nrrnn STATES PATENT rrrcn.

WILLIAM F. TROAST, OF LANCASTER, PENNSYLVANIA, ASSIGNOR TO THE SLAYMAKER-BARRY COMPANY, OF SAME PLACE.

.PADLOCK.

SPECIFICATION forming part of Letters Patent No. 536,844,6.ated April 2, 1 895.

Application iiled September 19, 1894.. Serial No. 523,505. (No model.)

.T0 all whom it may concern:

Be it known that I, WILLIAM F. TRoAsr, a citizen of the United States, residing at Lan-V caster, in the county of Lancasterl and State of Pennsylvania, have invented certain Improvements in Padlocks, of which the followingis a specification.

This invention relates to improvements in that class of padlocks having a vertically movable shackle; and the object of the invention is to combine the advantages of the mobility of the padlock with the security of locks permanently affixed to doors.

The invention consists in the construction and combination of parts hereinafter fully described, and then specifically pointed out in the claims.

In the accompanying drawings, forming a part of this specification, Figure l is an inside perspective view of the body of the lockcase, the operating parts being removed. Fig. 2 is a top plan view of the same. Fig. 3 is atop plan view of the case, showing the operating parts in place locking the shackle therein, and Fig. 4 a similar View, but showing the shackle extended. Fig. 5 is a vertical section on the broken line l--l of Fig. 4., and

Fig. 6 a similar view on broken line 2-2 of Fig. 3. Fig. 7 is a plan view of the key; Figs. 8 and'Q, plan views of two of the tumblers; Fig. 10, a bottom edge view of the lock; Fig.

' l1, a perspective view of the third tumbler,

indicates a round case having a circular recess A in one edge thereof to receive the hasp engaged by the lock. On the inner face of the side wall A2 of the lock are buttresses, a, having rivet-pins, a', projecting outward therefrom and adapted to engage corresponding openings in the closing-plate A3, which issimply a flat piece of metalhaving theshape of,

the body of the case. Adjacent to but somewhat inside of one of the jaws, A4, of the opening into recess A there is a bearing a?,

extending inward from side wall A2 to said recess, the side Wall being cut away between said jaw and the bearing to permit of the entrance of the outer jaw of the bow or shackle, to be hereinafter described, and on the outer side of the inner end of bearing a2 is a vertical lip, a3, located to be engaged by the end ofsaid shackle jaw. From and at an angle with said inner end of bearing a2 there is a wall, B, extending back into the case and separating that side of recess A from the adjacent portion of the interior of said case. Wall B has a twing, B', on the inner end thereof forming an angle therewith and projecting beneath recess A', where it serves as a bearing for the inner jaw of the shackle. Side wall A2 is also cut away adjacent to the other jaw, A5, of the'opening into recess A', as illustrated iti Figs. l and 2, the side Wall being thus cut awayon both sides of the jaws of the said recess to receive the shackle.

Beneath the free end of extension B is a post, b, that serves as a pivot for the turnblers. These tu mblers, D, D and D2, are elongated vertically, and each is provided at its upper end with a dog, d, d and d2, respectively, on the side adjacent tothe stem of the shackle, with a notch in the edge of which they are adapted to engage. Frein the same end and on the side opposite the dog there projects from each tumbler a ward, e, e and e2 respectively, the second ward being widened down ward` below the upper Ward e and, in the same Way, the third and lower Ward e2 below the second Ward e. From the lower end of each tumbler, and on the same side as the wards, there projects a locking-arm, e3, constructed to engage a recess in the key, as will be hereinafter set forth. Arms e3 are of less thickness than the tumblers, being cut away on one ofthe horizontal faces, as illustrated in Fig. 1l, that they may engage said recesses in the key, While, at the same time, the shoulders e4 formed by this reduction in the thickness of said arms aiord bearings for the springs that engage the tumblers with the stem of the shackle. These arms e3 also serve as obstacles to picking, or tampering with, the lock, as the pushing upward or inward of either one of the wards by a wire or other instrument projects across the key-opening the arm e3 on the tumbler carrying that ward, or causes the arm ea to engage said wire or other ICO instrument and prevent the complete disengagement of the heel of the tumbler from the shackle, or the arm may press said wire or other instrument against the opposite wall of the key-opening while said arm itself obstructs the part, if any, of the key-opening not occupied by said wire orother instrument. Opposite the tumblers there is a partition, E, that forms therewith a channel in which the stem of the shackle moves, said partition having an upwardly extending lip, E', on its upper end, so as to form shoulders E2 near that end.

The shackle comprises a stem F having the inner end reduced to form a shoulder, f, and a head having an upper jaw F and a lower -aw F2 formin01 on the side toward the tumblers, a circular opening, F3, corresponding with and adapted to register with recess A of the case. The space between the free ends of jaws F and F2 is sufiicient to permit the entrance into opening F2 of hasps of any required thickness. \Vhen the shackle is closed jaw F engages bearing a2 and lip a3,a11d the lower edge of jaw F2 rests upon wing B. In its movements back and forth, jaw F2 slides along and against wall B, which, with the bearing of the other side of stem F against partition E, maintains the shackle in its proper position. An elongated recess, f', is cut in the back edge of stem F near its lower end, which recess is engaged by lip E of partition E. The engagement of the upper and lowershouldersf2 and f3 respectively, formed by recess f', with the opposite ends of lip E limits the inward and outward movement of the shackle. In the edge of stem F beneath jaw F2 is also formed a shoulder, f4, located to be engaged by the dogs of the tumblers when the shackle is locked in the case, and below shoulder f4 there is another shoulder, f5, formed in the same edge of the stem and located to be engaged by heels d2 of said tuinblers when the shackle is fully in the case, whereby said shackle is locked in such position.

The edge of the shackle below shoulder f5 is a [iat surface, so as to present a smooth bearing to the adjacent edges e5 of the tumblers when the shackle is moved in and out of the case. Vhen the shackle is moved out of the case the contact with this edge thereof, in conjunction with springs g g', holds the tumblers in a stationary position.

The tumblers are forced into engagement with shoulders f5, and so held, by springs-- one for each tumbler. These springs are wrapped around a post, G, located below the tumblers and have one end, g, of each engaging one of the shoulders e4 of said tumblers and the other end, g', bearing against a buttress, I-I, forming one ot the sides of the keyopening. This buttress has two steps, h., cut in its face, each of which supports an end of one ot' the two upper springs g and g', while the corresponding end of the lowest of the like springs rests upon the bottom or back `plate of the case, by which construction each spring istixed and retained in its proper position.

XVhen freed from the engagement of the tumblers the shackle is forced upward out of the case by a spring wrapped around a post K, located between partition E and the adjacent portion of side wall A2, the end I of said spring engaging shoulder f of the inner end of the shackle and end I bearing against said partition.

The key opening L is in the lower portion of the side wall of the case and off of the center thereof. On each side of opening L and within the side wall there is a buttress II, the face of each ot which forming a side of said opening being a plain, fiat surface, to make a more extended bearing for the sides of the key, which is furthersupported and guided by a channel formed of ribs, l, extending for a portion of the distance from said opening toward the wards of the tumblers. The bottom Z of the channel is raised above the back or bottom of the case and extended beyond the inner end of said channel beneath the wards of the tumblers to wing B', serving to guide and support the key in proper position to engage said wards.

The key M is illustrated in Fig. 7. rlhe end of the key has offsets, m, constructed to simultaneously engage the unequally extending lower edges of the tumbler wards. The position of the tumblers with reference to each other may be varied, so as to change the relative position of the wards, andthe key made to coliform therewith, whereby a number of locks requiring different keys can be constructed with the same tumblers; or the shape of the wards themselves may be changed. Back of the inner end the upper and lower edges of the key are cut away to form recesses, m. These recesses are located to receive the locking arms c2 as the tumblers are disengaged from the shackle.' The position of the locking arms of the different tumblers and the corresponding recesses in the key may also be varied to further guard against the surreptitious opening of the lock.

In operating, the shackle being locked in the case, the key is inserted and pushed against the wards of the tumblers, disengaging the heels d3 from the shackle, which is forced outward by spring I I. As the key pushes the wards upward locking arms e2 engage the recesses m of the key, which it holds in the lock until the shackle is pushed back into a position to be locked, when heels d3 are engaged with shoulders f5 of said shackle by the action ot' springs g g. Should a key not suitable to the lock be applied to open it the first ward it engages will detach the heel of the tumbler to which it belongs from the shackle and at the same time hook its dog over shoulder f4, thus ei'fectually locking the shackle in place.

I do not confine myself to any particular shape of lock-case. Neither do I restrict myself to the details of the construction and ar- IOO IIO

rangement of parts herein shown and described, as it is obvious that many changes and alterations may be made therein without departing from the principle of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a padlock, the combination, with a tumbler constructed to secure the shackle in the case, of an arm formed with said tumbler and adapted to engage the key and hold the same in the case while the shackle is in an open position.

2. In a padlock, the combination, with a tumbler constructed to secure the shackle in the case, of a Ward formed with the tumbler and adapted to be directly engaged by the key, and an arm formed With said tumbler and adapted to engage the key and hold the same in the case while the shackle is in an open position.

3. In a padlock, the combination, with a tumbler constructed to secure the shackle in the case, of an arm formed with said tumblerl and adapted to engage behind a shoulder of the key While the shackle is in an open position, andmeans for holding the tumbler immovable while the shackle is in such open position.

4. In a padlock, the combination, with a tumbler constructed to secure the shackle in the case, of a ward formed with the tumbler and adapted to be directly engaged by the key, an arm formed with said tumbler and adapted to take behind a shoulder on the key while the shackle is in an open position, and means for holding the tumbler immovable while the shackle is in such open position.

5. In a padlock, the combination, with a tumbler constructed to secure the shackle in the case, of an arm formed with the tumbler on one side thereofand adapted to engage behind a shoulder of the key while the shackle is in an open position, and. a heel on the other side 0f the tumbler bearing against said shackle, substantially as and for the purpose specified.

6. In a padlock, the combination, with a plurality of tumblers having dogs and heels formed therewith on opposite sides ofthe pivot, and wards formed with said tumblers on the sides thereof opposite said dogs and heels and constructed to be directly engaged by a key, of a shackle provided with an upper shoulderV and a lower shoulder, the upper shoulder being adapted to be engaged by the dogs on vthe tumblers and the lower shoulder by the heels on said tumblers, substantially as and for the purpose specified.

.7. In a padlock, the combination, with a plurality of pivoted tumblers having dogs and heels formed therewith on opposite sides of the pivot, and wards of unequal Width formed with the tumblers inside of the pivot and on the sides opposite the dogs and constructed to be directly engaged by a key, of a 'shackle provided with an upper shoulder and a lower shoulder, the upper shoulder being adapted to be engaged by the dogs on the tumblers and the lower shoulder by the heels on said tumblers, substantially as and for the purpose specified.

8. In a padlock, the combination, with a shackle, of a plurality of tumblers, a dog formed with one end of each tumbler and a heel formed with the other end of each tumbler, said dogs and heels being constructed to engage shoulders in the shackle and. lock the same in the case, wards of different Widths formed with the tumblers and adapted to be directly 'engaged by a key, and an arm formed with one of said tumblers and adapted to engage behind a shoulder in the key while the shackle is in an open position, substantially as and for the purpose specified.

9. In a padlock, the combination, with a shackle, of a plurality of pivoted tumblers, a dog formed with each tumbler on one side of the pivot and a heel formed with each tumbler on the other side of said pivot, said dogs and heels being constructed to engage shoulders in the vshackle and lock the same in the case, Wards of different widths formed with the tumblers, an arm formed with each of said tumblers and adapted to engage behind a shoulder in the key while the shackle is in an open position, and means for holding said tumblers immovable while the shackle is in such open position, substantially as and for the purpose specified.

IO. In a padlock, the combination, with a shackle, of a tumbler having a heel thereon constructed to engage a shoulder in the shackle and lock the same in the case, a Ward formed with the tumbler, and an arm formed with said tumbler below the ward and adapted to be projected in front of the key-opening as the ward is actuated to disengage the heel from the shackle.

1l. In a padlock, the combination, with a shackle, of a tumbler having a heel and a dog thereon, each adapted to engage a shoulder in the shackle, a Ward formed with said tumbler, and an arm formed with the tumbler below the ward and adapted to be projected in front of the key-opening as the ward is actuated to disengage the heel from the shackle, substantially as and for the purpose specified.

12. In a padlock, the combination, with a shackle, of a plurality of tumblers,a dog and 4a heel formed with each of said tumblers and constructed to engage shoulders in the shackle and lock the same in the case, wards of dier'ent widths formed with the tumblers, and an arm formed with each tumbler below the ward and adapted to be projected in front of the key-opening as the ward on its tum; bler is actuated to disengage the heel thereof from the shackle, substantially as and for the purpose specied.

WILLIAM F. TROAST. Witnesses:

GEO. A. LANE, WM. R. GERHART.

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