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Publication numberUS123558 A
Publication typeGrant
Publication dateFeb 13, 1872
Publication numberUS 123558 A, US 123558A, US-A-123558, US123558 A, US123558A
InventorsH. William Dopp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Improvement in indicator-padlocks
US 123558 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

H. W. DOPP, Improvement in Indicator Pad Locks. N0.123,558.

Patented Feb. 13, i872.


IMPROVEMENT IN lNDlCATQR-PADLOCKSJ Specification forming part of Letters Patent No. 123,558, dated February 13, 1872.

Specification describing; certain Improvements in Padlocks, invented by H. WILLIAM DOPP, of the city of Buffalo, in the State of New York.

First, the first part of my invention consists in the manufacture of a padlock, in which is an indicator, composed of a series of rings or wheels, each of which is provided with ten figures on its periphery and they are placed in a row, so that a numbermay be produced in the manner substantially as shown in the drawing. Second, in the arrangement of a slide on the face side of the lock, said slide being locked and unlocked by a series of tumblers beneath it, and engaging with the lock-bolt. Third, the casing for the padlock, as shown, consisting of a box, a hinged door or cover, and a blade-sprin g, arranged and operated as shown.

I refer to the annexed drawing, which eX- plains my invention more fully, and in which like letters of reference indicate like parts.

Figure 1 represents a face view of my padlock when unlocked. Fig. 2 represents an interior view, part in section. Fig. 3 is a view of the under side of the face-plate. Fig. 4 is a vertical section. V Fig. 5 is an end and side view of the register rocking shaft; said rocking shaft is provided with a slot which runs nearly through its entire length. Fig. 6 is a plan of the key. The fingers of said key are on their end alternately of wedge-shape, or so that when the key is inserted into the lock they enter beneath and wedge up their respective tumblers. The other fingers are square on their ends. Fig. 7 is a section of a metal casing, intended to inclose the padlock so as to protect it against snow, ice, 85c. Fig.8 is a front view of the same with portions of the cover removed. The cover or door B is hinged to the box part of casin g, and is kept shut or open by a blade-spring, S, acting upon said hinged cover, as plainly illustrated in Fig. 7.

A is a slide plate, provided with an opening, A of such size as to expose one figure of each of the register-wheels or rings H. It 7 is also provided with a pin or stud, B, which connects with the lock-bolt G by means of camgroove 0 and two grooves, A A sunk in its under side for the tumblers I to engage in. It is further provided on its under side with two pins, A by means of which motion is given to the rock-shaft F. SlideA is secured to the face-plate E by means of a dovetail, in which it slides up and down. The pin or stud B, and the pins A reach through slot-holes E and E in face-plate E, so as to connect with lock-bolt C and rocking shaft F. E is the face-plate or cover of the look. It is provided with a series of tumblers, I, on its under side, which tumblers reach through two correspondin g slot-holes of face-plate rFig. 4) into the two grooves A thus locking A to E. The faceplate E isalso provided with an opening, so as to expose a figure of each of the registerwheels or rings H; also, with a coiled spring, K, secured to a projecting stud on its under side, which spring acts on the stud B to force the slide-plate A downward as soon as it is released from the tumblers I.

It will be observed that, as the slide-plate is connected to lock-bolt G by means of the stud B and cam-groove G the lock-bolt G will move backward or forward whenever the plate A is moved downward or upward. When A is forced down by means of the coiled spring K, lock-bolt G withdraws out of the hook of the shackle, and the lock is unlocked; but when the slide-plate A is moved upward, the lock-bolt C will move forward, and if the shackle-hook has been inserted in the lock, bolt 0 will move into hook L; and the tumblers I, as soon as slide A is entirely moved up, will enter the grooves A of slide A and remain in this locked position until the slide is released from the tumblers I by means of a key inserted in the key-hole I. F is the register rocking shaft, which has its bearings in the register-casing M. A series of rings, H, surround said rocking shaft, as seen in Figs. 2 and. F is provided with a slothole for the reception of a sliding bar, N, and with a round hole, N,

through its end for the reception of a pin, P,

by means of which motion is transmitted from the slide A to the shaft F. Said pin P matches in between two similar pins, A secured to slide A, so that if A is moved downward and upward, they will rock the shaft F. H is a series of 'wheels or rings, each provided with ten square notches inside, one of which is much deeper than the rest 5 and with ten ratchet-notches on their periphery. Between each of these notches is stamped a figure, from 1 to 0, consecutively. Said wheels or rings H are placed into their casing M, in which they revolve. For every rocking motion of shaft F the unit'wheel at right hand will revolve the distance from one notch to another; the tenswheel revolves the distance of one notch for every entire revolution of the unit-wheels; the hundreds -wheel moves the distance of one notch for every one entire revolution of the tens-wheel, and so on. M is the casing of the decimal register. An opening is cut through at E in Fig. 4, so as to expose one figure of each of the wheels or rings H. An opening is also cut through nearly opposite of E so as to expose one notch of each of the rings H. A series of small spring-pawls, one for each ring, en gages with the notches on their periphery, as is plainly shown in Fig. 4. Said springs and notches serve to keep the wheels H in place. N is a sliding bar placed in the rocking shaft F, in which it slides up and down. It is kept within F by means of a cover, se-

1 cured in dovetailed grooves of F, as seen in Fig. 5. A small coiled spring is secured at one end to said cover, and the other end to sliding bar N, as illustrated in Fig. 2. Said coiled spring serves to make the bar N engage with the square notches inside of wheels H, so that whenever the shaft F and bar N are set in motion, the wheel or wheels engaged with the bar N will also move.

It will be observed, first, that the shaft F receives its motion from slide plate A; second, that slide A is set in motion whenever the lock is to be locked or unlocked third, that the shaft F, by means of bar N, engages with one or more of the wheels or rings H by means of the inside square notches; it is therefore that the register will count one for every time the lock islockcd; and be it further observed, that the key, as represented in Fig. 6, is provided on its left side with a longer linger, long enough to reach projection N of the bar N, thus disengaging N from H, so that N may engage with the next square notch in one of the rings II. The bar N is disengaged from H by means of the key, but it engages again with H at the moment the key is withdrawn and the lock becomes unlocked. So it will be seen that the register remains undisturbed during the process of unlocking; but revolves the distance of one number every time the lock is closed, although the respective number will not appear until it is unlocked again, because the slide A must be in the position shown in Fig. 1, in order to show the register; and be it further observed, that the rings H are each pro vided, on their inside, with nine shallow square notches and one deep square notch. Now, suppose that the whole series of wheels H are placed so as to bring the deep notches all in one line when the register shows but naughts;

the consequence will be that, on account of the engages with the shackle of the look, as seen in Fig. 2, to throw or force the hook end of shackle out of the lock whenever the lock-bolt O disengages from hook L.

In order to lock the lock, press the shackle down into the lock, and the slide A up. In order to unlock, insert the key with its long finger to the left into the key-hole I until it comes to a stop. This diseu gages the tumblers from A, when the springs K and 0 will open the lock.

Having thus fully described my invention, what I desire to secure by Letters Patent, is-


1. I claim, in a padlock, an indicator composed of a series of rings or wheels H, provided each with ten fingers on their periphery, and placed in a row, so that a number maybe produced in the manner substantially as shown and described.

2. I claim, in a padlock, the combination of the register-casing M, decimal-wheels H, sliding bar N, and shaft F, as and for the purpose set forth.

3. I claim the arrangement of a slide A on the face outside of a padlock engaged with the lock-bolt (J, coiled spring K, and a series of tumblers beneath it, for the use and purpose set forth.

4. I claim, the combination of slide A and coiled spring K, or its equivalent, with a decimal-register, when operated as specified.

5. I claim a decimal-indicator, in combination with the sliding bar N, and a key or equivalent, as set forth.

6. I claim a casing for padlocks, consisting of a box, a hinged door or cover, and a bladespring, arranged and operated substantially as shown and described.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2987910 *Jul 23, 1957Jun 13, 1961Samuel GluckSafety locks
US7661278 *Oct 16, 2008Feb 16, 2010Yao-Kun YangLock assembly capable of counting the number of times of unlocking operation
US7793528 *Jul 16, 2007Sep 14, 2010Maples Stephen SKey-operated mechanical lock
US8201423Sep 17, 2010Jun 19, 2012The Eastern CompanyCombination and key operated locks with indicators
US8881558Jun 8, 2012Nov 11, 2014The Eastern CompanyCombination and key operated locks with indicators
Cooperative ClassificationE05B39/04