US1365109A - Portable watchman's clock - Google Patents

Description

R. D. KING.

PORTABLE WATCHMANS CLOCK.

APPLICATION HLED FEB. 9, 19:7.

1,365,109. Patented Jan. 11, 1921.

5 SHEETS-SHEET 1- maze/556$. EUGWZZFK' mmww R. D. KING.

PORTABLE WATCHMANS CLOCK.

APPLICATION FILED FEB. 1911.

' 1,365,109, Patented Jan 11, 1921.

5 SHEETSSHEET 2.

R. D. KING.

PORTABLE WATCHMANS CLOCK.

APPLICATION man FEB. 9. 1917.

1,365,109, Patented Jan. 11, 1921.

5 SHEETS-SHEET 3.

R. D. KING. PORTABLE WATCHMANS CLOCK. APPLICATION FILED FEB. 9. I917.

1,365,109, Patented Jan. 11,1921.

5 $HEETSSHEET 4- R. D. KING.

PORTABLE WATCHMAN'S CLOCK.

APPLICATION FILED FEB; 9, 1917.

1,365,109. Patented Jan. 11, 1921.

5 SHEETS-SHEET 5.

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ROY 1). KING, OF CHICAGO, ILLINOIS, ASSIGNOR TO M. R. NEWMAN,

PATENT OFFICE.

OF CHICAGO,

ILLINOIS.

Specification of Letters Patent.

Patented Jan. 11, 1921.

Application filed February 9, 1917. Serial No. 147,522.

To all whom it may concern:

Be it known that I, ROY D. KING, a citizen of the United States, residing at Chi cago, in the county of Cook and State of Illinois, have invented certain new and useful' Improvements in Portable lVatchmens Clocks, of which the following is a specification.

This invention relates in general to watchmens clocks, such as are carried by night watchmen and the like, on their rounds from station to station in a building, each station being equipped with a key which the watchman inserts in the clock to actuate the marking mechanism therein, which marks or re cords upon a recording dial the time at which each station key is used.

One of the primary objects of my present invention is to provide aclock of this character in which the clock movement will be separated and substantially sealed from the marking mechanism so that any dust, dirt, moisture or other foreign substance which may enter the compartment in which the marking mechanism is mounted, either through the key hole or when the cover is open, will be precluded from entering or coming into contact with the clock movement.

Another object of my invention is to so mount the clock movement in its case that it will not be liable to injury from jars or shocks imparted to the case, this result being accomplished by securing the movement to an intermediate wall of the case instead of attaching it directly to the outer walls of the case as has heretofore been customary.

A further object of the invention is to provide a watchmans clock which will be both stem winding and stem setting, thus obviating the use of a winding and setting key, and also to provide a structure which will entirely inclos e and protect the winding and setting stem so that it will not be subjected to injury, and also to prevent its being tampered with by the watchman.

Another object of my inventionis the provision of a novel holder for the recording dial which is bodily removable from the case with the dial, so that the dial can be readily removed and replaced by another, and which is frictionally connected with the revolving staff operated by the clock movement so thatthe removal and replacement of the holder can be quickly and easily performed without removing and replacing any washers or nuts and also allowing the dial to be set to correct time.

Still another object of this invention is to provide a novel detector, which will make a record on the recording dial each time the cover of the case is opened or closed so as to thereby insure detection of the watchman should he find the key which unlocks the clock and open it for any cause. In this connection, my invention also contemplates leaving a free and unobstructed space with in the compartment in which the marking mechanism is mounted so that the recording dial can be easily introduced and withdrawn from the case, and with this end in view my novel detector, instead of being mounted in the case is carried by the cover so that when the cover is opened to permit removal of the dial the detector is carried thereby entirely away from the case so that it will not ob struct or interfere with the removal or replacement of the dial.

A further object of my invention is the provision of a dust receptacle in which any dust or other foreign substance entering the marking mechanism compartment through the key hole will be collected and retained so as to prevent it from eventually working into the clock movement compartment.

In connection with the marking mechanism and the station key for actuating the same, my improvement contemplates the provision of a safety or fool-proof mechanism which will insure the complete actuation of the marking key before the key can be withdrawn, thus compelling the watchman to completely operate the marking mechanisms at each introduction of a marking key into the case.

Other objects and many of the attendant advantages of tiis invention will be readily appreciated by those skilled in the art as the same becomes better understood by reference to the following description when considered in connection with the accompanying drawings. Referring to the drawings,-

Figure 1 is a plan view partially in section looking at the recording dial side of a clock embodying my invention;

Fig. 2 is a sectional view taken substantially on the line 2-2 of Fig. 1 with the marking mechanism removed;

Fig. 3 is a fragmentary sectional detail view of my novel record dial holder;

Fig. 1 is a similar view showing the holder removed from its operating staff Fig. 5 is a fragmentary elevation looking toward the right at Fig. 4;

Fig. 6 is a fragmentary view showing the safety registering mechanism which makes a record at each closing and opening movement of the cover;

Fig. 7 is a sectional view through the marking mechanism;

Fig. 8 is an end view looking down onto the mechanism shown in Fi 7;

Figs. 9 and 10 are plan and edge views, respectively, of a station key;

Fig. 11 is a sectional view on the line 11-11 of Fig. 10;

Fig. 12 is a detail perspective view of the key-retaining sprin Fig. 13 is a sectional view similar to Fig. 7, but showing the position of the parts when the key has actuated the marking mechanism Fig. 14 is a View of the case in which the clock is contained showing the protective plate for the clock crystal; and

Figs. 15, 16, 17 and 18 are views similar to Figs. 7, 8, 9 and 10, showing a modified form of station key and key-controlling mechanism.

From an inspection of the drawings it will be manifest that my improved clock comprises, primarily, a case consisting of the circular side walls 15, the face plate 16, and the cover 17. The inside of the case is divided into two compartments by a transverse partition wall 18, preferably formed integrally with the side walls 15, these walls being made of aluminum or other suitable material, cast or pressed into shape. Since the partition wall 18 extends entirely across the case it will be obvious that the two compartments into which the case is divided by this wall are entirely separated one from the other.

The clock-movement, which is designated generally by reference character 19, may be of any well known or preferred construction, the mechanical details of the movement not being shown on the drawings, as their construction is immaterial so far as the present invention is concerned. This movement 19 is mounted in one of the compartments of the case and is supported and partially inclosed by a circular flange or upstanding wall 21 projecting from one face of the partition wall 18, as best shown in Fig. 2. The movement is secured and maintained in position in its mounting by means of the plate 16, which has an annular centrally arranged opening provided with an overhanging bezel 22 which engages and holds the crystal 23 in position. An annular member 24, preferably of suitable spring metal, is shaped as shown in Fig. 2 to provide an inclined or tapered portion 25 lying between the crystal 23 and the face plate 26 of the clock. The radially projecting flanged portion 27 of this member lies directly beneath the plate 16 and between the plate and a plurality of posts 28, which are interiorly threaded and rigidly secured to the partition wall 18 by the screws 29,0ther screws 31 extending through the plate 16 and the flange 27 and threaded into the outer ends of the posts 28, serving to securely fasten the plate 16 and thereby rigidly holding the clock movement in the position shown in Fig. 2.

The hands 32 and 33 of the clock-movement are mounted upon staffs or arbors in the usual manner which are connected through suitable mechanism to the inner member 34 of the stem, by which the hands are set. The outer tubular member of the stem surroundin the member 34 is 0011' nected with the winding mechanism of the clock-movement, and both the members 34k and 35 are operated at will to either wind or set the clock by means of a stem extension 36 mounted to slide longitudinally in a bearing 37 carried in the barrel 38 and terminating at its outer end in an enlarged knurled head or button 39, by means of which the stem is rotated. The inner end 21 of the stem member 36 is bifurcated and is adapted. upon longitudinal movement of the member 36, to be engaged with either the member 3 1- or the member 35, as desired, so that the requisite one of these members will either set or wind the clock movement.

It will be manifest therefore that I have provided a watchmans clock which is adapted to be both stem wound and stem set, thereby obviating the use of winding and setting keys and precluding the possibility of the entrance of dust, moisture or other foreign substances into the clock movement through the winding and setting key holes, which have heretofore been considered necessary in clocks of this type. When the projecting end or enlargement 39 of the stem is in the position shown in full lines in Fig. 2 the member 36 is connected with the winding member 35, and when it is desired to set the movement the end 39 is withdrawn. into the dotted line position shown in Fig. 2, thereby connecting it with the setting member 34, and simultaneously disconnecting it from the winding member.

The compartment on the opposite side of the transverse partition 18 from the compartment in which the clock movement is mounted is adapted to contain the recording dial and the marking mechanism, which Will be later described in detail. This compartment is closed by the cover 17 which is hinged at 4:2 to a metal strap 43 securely attached by screws 44 to the outer side of the casing at the top thereof, this strap being shaped to provide the outwardly extending ears 45 to which carrying straps or the like may be attached. The cover 17 may be swung back on its hinge to entirely expose the compartment so that the recording dials may be readily removed and repositioned in the compartment. At the side of the cover opposite to the hinge d2 there is hingedly mounted at as a hasp, designated generally by reference character 47, which hasp is equipped with a lock -18 adapted to enter an opening 4-9 formed in the wall of the case. The details of construction of this lock may be of any preferred construction but in the present instance I have shown a locking member 51 adapted to be rotated by a key into the locked position shown in Fig. 2, wherein it enters a groove or channel 52 formed in a block 58 rigidly attached to the casing structure.

For the purpose of completely covering and closing the projecting end 39 of the winding and setting stem so as to prevent injury to the stem and also preclude the watchman from tampering with the clock, the hasp is shaped so as to provide a recessed portion 54, adapted to receive and contain the stem end 39. It will be obvious that when the cover is closed and is locked by the lock on the hasp, as shown in full lines in Fig. 2, access to the interior of the marking mechanism compartment or to the winding and setting stem cannot be had by the watchman unless he obtains possession of the key which would release the locking member 51. This key, however, is in practice retained by the man in the office, in charge of the clocks, and since the cover is closed and locked before the clock is given to the watchman the possibility of the watchman tampering with the lock is practically eliminated. As it may sometimes happen that the man in charge of the clocks may, after setting any particular clock, forget to push the winding and setting stem inwardly so as to disconnect it from the setting mechanism, I have so proportioned and constructed the recess 52L in the hasp 47 that it will engage with the enlarged end 39 of the stem if the stem is left projecting into the dotted line position shown in Fig. 2 and will automatically move the stem inwardly into the requisite position when the hasp is closed against the casing wall to lock the cover in closed position. It will be manifest therefore that I have provided not only for securely locking the cover in closed position, but have also made provision for completely inclosing and protecting the Winding and setting stem, and have also insured against the stem being in extended position when the clock is put in service.

The clock-movement 19, which forms the motive power for the clock and the recording dial, is equipped with the usual staff 55 which projects through an aperture in the partition wall 18 into the compartment on the opposite side of this partition. This staff, which is rotated by the clock-movement, is adapted to be connected with the paper recording dial 56 upon which the impressions of the marking mechanisms are recorded. Heretofore it has been customary in clocks of this character to establish the connection between the recording dial and the rotating staff by means of a threaded nut or washer, which must be unthreaded and removed each time the dial is changed. My present invention, however, contemplates the elimination of such a nut or washer and provides a dial holder adapted to be bodily connected to and disconnected from the staff by a simple longitudinal movement.

This dial holder, as best shown in Figs. 3, l and 5, comprises a post 57, preferably knurled at its outer ends as indicated at 58 so that it may be readily grasped between the thumb and forefinger and rotated if required, and moved longitudinally into and out of engagement with the staff, this post being surrounded by a collar orsleeve 59 rigidly secured thereto and provided at its lower end with a radially projecting flange or disk 1 which is equipped with a plurality of sharpened upwardly extending pins 62. The dial holder as shown in Fig. 4 may be bodily removed from the clock and the paper record dial 56 which is provided with a central aperture may be positioned on the holder by slipping it down over the stem 57 and forcing the pins (32 upwardly through the paper as shown in Figs. 3 and 4, thereby insuring that the dial will rotate with the holder. For the purpose of establishing a frictional driving connection between the holder and the staff the stemis provided interiorly near its lower end with a metal socket provided with longitudinal slits which permit the socket to expand and fit over and snugly embrace the staff as shown in Fig. 3. To connect the holder to the staff it is only necessary to force the socket downwardly over the staff which will be firmly grasped by the surrounding walls of the resilient metal socket so that the holder and the dial carried thereby will be rotated with the staff. \Vhen it is desired to change the dial the holder can be removed by simply pulling outwardly longitudinally upon the stem 57, thereby freeing the holder from the staff so that the holder can be bodily removed from the case for the attachment thereto of a new dial. For the purpose of recording upon the dial 56 any unauthorized opening of the cover 17, such as might be accomplished by a duplicate key in the possession of the watchman which would lit the lock 48, I have provided a registering device which will register upon the dial each opening and closing movement of the cover. I am aware that registering devices for this purpose have been employed prior to my present invention but so far as I know these devices have always been mounted within the case itself, where they interfered more or less with the insertion and removal of the recording dials. My present invention contemplates the provision of a novel registering device which will be mounted upon and carried by the cover so that when the cover is open the registering device will be removed from the clock case, leaving the compartment unobstructed for the insertion and removal of the recording dials.

Referring now more particularly to Figs. 1 and 6, it will be observed that upon the inner face of the cover 17 I have mounted an inwardly projecting housing 65 which is cored longitudinally to receive a plunger 66, the plunger being normally urged outwardly in its casing by a coiled expansion spring 67 disposed in the bottom of the core as shown in Fig. 6. The projecting end of the plunger 66 is sharpened as indicated at 68 so as to perforate the record sheet 56 ad jacent its periphery when the plunger is in fully extended position. The partition wall 18 is also provided with a depression 69 in alinement with the sharpened end 68 so as to permit penetration of the record dial by the sharpened end of the plunger. A short distance from the housing 65there is mounted upon the inner face of the cover a post 71, upon the inner end of which there is pivoted upon a pivot pin or bolt 72 a lever 73, the free end of which projects through a slot 74 in the wall of the housing 65 and into a notch 75 formed in the plunger 66. Outward movement of the plunger with respect to its housing is limited by engagement of the lever 73 with the outer end of the slot 74. Upon the inner face of the side wall 15 of the casing and in proximity to the post 71, when the cover is closed, I have mounted a stationary pin or abutment 76 disposed in the path of movement of the lever 73. When the cover is in fully closed position as shown in Fig. 6 the lever 7 3 will be held by the abutment 76 in the position shown in Fig. 6 with the perforating point 68 of the plunger retracted from the recording dial so as to permit free rotation of the dial by the clockmovement. Should the cover be opened, however, initial opening movement will permit the plunger to be projected by the. spring 67 so to perforate the record dial and the dial will be again perforated by the plunger upon closing movement of the cover just before the cover reaches entirely closed position. It will be evident that this penetration of the record dial by the perforating point of the plunger will be permitted when it is considered that the stationary abutment 76 is mounted relatively close to the pivot pin 72 of the lever 7 3, so that when the cover is approximately but not entirely closed the abutment will not hold the lever out far enough to prevent penetration of the record dial by the point 68. It will further be evident that since the registering mechanism is carried by the cover instead of being mounted in the clock case itself, this mechanism will be entirely removed from the case when the cover is opened, thereby leaving the compartment unobstructed at that side of the ease for the insertion and removal of the record dial.

The marking mechanism by means of which the impressions are recorded on the dial through the instrumentality of the keys located at the various station boxes, is carried by a plate 76 mounted at one side of the case as shown in Fig. 1 and spaced from the partition wall 18 so as to permit the record dial 56 to rotate in the space between the partition and the plate 76. The partition wall 18 is provided with a plate 77 carrying raised type in the form of figures or letters and upon the cross rod or shaft 78 mounted at its end in the upstanding flanges 79 and 81, respectively formed at opposite edges of the plate 76, there is pivotally mounted a series of marker arms 82 each having a downwardly extending projection or head 83 provided on its lower face with a depression. 84 corresponding with the raised type 85 on the plate 77, so that when any marker arm is depressed the record dial engaged between the marker arm and the type plate will receive the impression of the particular type shown by the plate and arm that has been operated. The marker arms are normally held in the elevated position shown in Fig. 7 by individual leaf springs 86, the upward movement being limited by a cross rod 87 extending transversely above the arms.

In proximity to the marker arms the easing is provided with a key hole 88 (Fig. 8) adapted to receive the station or marking keys each of which is constructed to op erate its particular marker arm. From Figs. 9, 10, and 11, it will be observed that the station key designated generally by 89 is provided with an elongated laterally projecting flat bit 91 adapted to overlie all of the marking arms in the case. Each key, however, is provided with a pin or projection 92 adapted to engage some particular marking arm, and the arm which will be operated by any particular key depends upon the longitudinal position of the pin 92 upon the bit. For instance, the pin positioned on the key, as shown in Figs. 9 and 10, will operate the extreme inner marker arm, while if the pin were mounted at the extreme outer end of the bit it would operate the outer marker arm, and if positioned intermediate the ends it would operate some intermediate marking arm. Each station key, therefore, has its pin 92 located in a different position longitudinally of the bit with the result that each key will operate only the marking arm for which it was designed.

In alinement with the key hole and in position to receive the shank of the key I have mounted upon the plate 7 6 between the flanges 79 and 81 a guide 93 which receives the key shank and guides and holds the key in position. Since the key hole is open, it is obvious that more or less dust, dirt, etc., will enter the semi-cylindrical guide, and for the purpose of preventing this dirt and foreign matter from being deposited in the marking compartment and eventually working into the clock movement, I have provided a receptacle into which this dirt is displaced from the guide at each insertion of a station key. This receptacle, as will be best seen from Figs. 1 and 8, consists of a channel shaped member 94L secured to the inner face of the flange 81, its ends being closed so as to provide a closed chamber or receptacle 95 which is open only through an aperture 96 formed in the flange 81 in alinement with and constituting an extension of the guide 93. The keys are of such length that the inner end of the shank of each key will just extend through this aperture 96 each time the key is inserted. It will be evident, therefore, that any dust or dirt collected in the guide 93 will be pushed by the ends of the key through the aperture 96 and deposited in the closed chamber 95 where the dust and dirt will be collected and thereby prevented from working into the clock movement. The member 94 is detachably secured to the flange 81 preferably by screws and at intervals it may be removed for the purpose of emptying the collected accumulation of dust and dirt therein.

It has frequently happened in practice that even though the watchman faithfully makes his rounds and inserts the station keys in the clock at the proper times, he would fail to turn the key the amount necessary to operate the marker arm and produce an impression on the record dial. For the purpose of obviating this difliculty and insuring a record of each station key inserted in the clock, I have provided a safety or fool-proof mechanism which necessitates a complete stroke of the station key sufficient to actuate the marker arm before the key can be with drawn from the case. This mechanism consists essentially of a device which engages the key upon insertion into the case and prevents withdrawal thereof until a complete stroke of the key has been effected, whereupon the return stroke of the key releases the device so as to permit withdrawal of the key. The embodiment of this mecha nism which I have selected for purposes of illustration, is best shown in Figs. 7 to 13 inclusive.

Referring now to these figures, it will be observed that adjacent to the guide 93 I have mounted upon the plate 7 6 a block 97 secured to the plate by the screw 98 and pin 99, or otherwise, and upon the inwardly projecting end of this block there is mounted a resilient flat spring member 101 which is secured to the block adjacent one end by screws 102, which pass through an overly ing bar 103 and through the openings 10 1 in the spring plate, thereby securely clamping the plate to the block. It will be observed from Figs. 7 to 12 that one corner of the plate adjacent to the block is down turned as indicated at 105, this downturned portion being disposed in the path of the key when the same is inserted in the case. The bit of the key, as shown in Figs. 9, 10, and 11, is provided with an annular depression 106 providing a straight shoulder 107 which is engaged by the downturned edge of the spring plate 105 when the key is fully inserted. In other words, upon insertion of the key the bit travels beneath the spring plate forcing the same upward slightly until the notch 106 is disposed beneath the downturned edge of the plate, whereupon this edge springs downwardly into the notch, engages behind the shoulder 107 and prevents withdrawal of the key.

Between the inner end of the block 97 and the upturned flange 81 of the plate 7 6, there is pivotally mounted upon a rod 108 a yoke shaped member 109 which is provided with a projection 111 disposed immediately beneath and in contact with the downturned edge of the spring plate 101. Between the free ends of the yoked member 109, I have pivotally mounted upon a pin 112 another member 113 which is provided intermediate its ends with a downwardly extending projection 114; which is disposed in the longitudinal path of movement of a key being inserted. The edge of this projection opposed to the key is provided with an inclined face 115 so that when a key is inserted engagement of the inner end of the key bit with this inclined face will swing the member 113 upwardly from the position shown in Fig. 13 to that shown in Fig. 7, so that the member 113 rides on the face of the key bit. Since when the key is fully inserted the spring plate prevents withdrawal thereof, the watchman must turn the key in a counterclockwise direction viewing Figs. 7 and 13, into engagement with a marker arm to operate the same as shown in Fig. 13. This oscillatory movement of the key causes the bit to travel laterally from beneath the projection 11 1 on the member 113, whereupon this member swings downwardly on its pivot under the influence of a light contractile spring 116, the downwardly swinging movement of the member 113 being limited by a stationary stop pin 117 projecting from the flange 81. The key is now freed from the spring plate 101, but cannot be withdrawn through the key hole until returned to normal position in alinement therewith.

Upon the return stroke of the key, or in other words, swinging movement of the key in a clockwise direction viewing Fig. 13, the forward edge of the key would engage with the projection 11 1 and carry the member 113 upwardly, viewing Fig. 13, against the force of the spring 116, this movement being permitted by swinging movement of the member 109 on its pivot 108. This swinging movement of the member 109 forces its projecting shoulder 111 against the spring plate 101, thereby moving this spring plate out of engagement with the key so that the spring plate is released from the shoulder 107, and the key is freely withdrawn. Upon withdrawal of the key, the members 109 and 113 reassume the position shown in Fig. 13, the swinging movement of the member 109 being limited by a stop pin or rod 118 proj ecting from the block 97. Upon reinsertion of the key the member 113 will be swung upwardly on its pivot again into the position shown in Fig. 7 and the spring plate will engage the notch in the key and prevent withdrawal so that it is impossible to withdraw the key until the marking mechanism has been actuated. The actuation of the marking mechanism brings the key into the position shown in Fig. 13, and return movement, by reason of engagement of the key with the projection 114, will again swing the member 109 on its pivot to release the spring plate through the instrumentality of the projection 111. It will thus be seen that a complete actuating stroke of the station key must be effected before the key can be withdrawn from the clock. Consequently, any failure to record a station on the dial can not be the result of a failure to properly manipulate the station key, but must be caused by failure of the watchman to visit that station and insert its key in the clock. It will further be evident that by varying the length or position of the spring plate and by varying the position of the notch on the keys, the likelihood of the watchman duplicating a station key or substituting another key in the clock in place of the one located at any particular station can be practically obviated.

In practice, a clock such as has been described is mounted in a case usually of leather and is carried by straps swung over the watchmans shoulder so that the clock is suspended in front of the watchman in conveniently accessible position. As in making the rounds the watchman is apt to break the crystal of the clock if the same is left exposed, it has been customary to cover the opening in the case through which the clock face is observed with a wire guard. The wires of the guard, however, interfere with the observation of the hands of the clock, and with a view of overcoming this objection to a guard and at the same time affordingadequate protection for the clock crystal I have provided a protector which is illustrated in Fig. 1 1. Referring to this figure, character 11.9 indicates the leather case in which the clock 120 is mounted. The side opening 121 through which the face of the clock is observed is covered by a protector plate 122 made of metal of suitable weight which is pivoted to the case 119 above the clock face upon a pivot pin 123. This protector plate overlies the face of the clock and adequately protects the crystal against breakage or injury, and when the watchman may desire to look at the clock he needs simply to swing the protector plate on its pivot from the position shown in full lines in Fig. 14L to that indicated in dotted lines, thus fully exposing the clock face. After he has observed the time he will release the protector plate, which will then swing under the influence of gravity about its pivot pin into the full line position shown where it fully covers and effectually protects the clock face and its crystal.

In the form of my invention shown in Figs. 15 and 16 the leaf or flat spring 101 is omitted and the projection 111 formed on the member 109 as shown in Fig. 7, for the purpose of moving the fiat spring away from the notch of the key is extended into a key-engaging projection 125 as shown in Fig. 15. The key 89 in this instance is provided with a notch 126 adapted to receive the projection 125 by means of which the key is prevented from withdrawal until this projection is released. The inner end of the key bit is chamfered off or inclined as shown at 127 so that the projection 1.25 on the yoke member 129 will be forced out of the path of the key upon insertion of the key, but when the key has been fully inserted the projection 125 will be engaged in the notch 126 under the influence of the spring 11.6. Upon movement of the key to marking position, as shown in Fig. 13, the shoulder 114 on the member 113 will drop back of the key and upon return movement of the key away from the marking mechanism the members 113 and 109 will be moved bodily in a clockwise direction, viewing Fig. 15, about the bearing rod 108 as a pivot, thus moving the projection 125 away from the key and preventing its engagement inthe notch 126. The key may now be withdrawn, whereupon the members 109 and 113 will assume their normal position under the influence of the spring 116, and upon reinsertion of the key the projection 125 will reengage in the notch 126 and prevent withdrawal of the key until after the marking mechanism has been operated.

It is believed that my invention and its mode of operation will be understood from the foregoing without further description, but, it should be understood that my invention is capable of embodiment in constructions differing materially in structural details than those illustrated and described vention or sacrificing any of its material advantages.

I claim: v

1. A watchmans clock comprising a case, aclock-movement and registering mechanism mounted therein, a stem connected with said movement and projecting outside said case whereby said movement may be wound and set, said stem being longitudinally movable from setting to winding position, and means normally covering said projecting stem when said case is closed.

2. A watchmans clockcomprising a case, a clock-movement and registering mechanism mounted therein, a longitudinally movable manually operable stem whereby said movement is wound and set, said stem projecting outside said case into accessible position, a hinged cover adapted to close over said registering mechanism, and a locking hasp carried by said cover, said hasp being adapted to inclose the projecting portion 01 said stem when the cover is in closed position.

3. A watchmans clock comprising a case divided by a transverse partition into two compartments, a clock-movement mounted in one of said compartments, registering mechanism mounted in the other compartment, a stem projecting from said movement outside the case whereby the clock may be manually wound and set, a hinged cover adapted to close the compartment in which the registering mechanism is mounted, a hasp hinged to said cover, and a lock carried by said hasp whereby the cover is locked in closed position, said hasp being provided with a recess adapted to receive and iuclosesaid winding and setting stem when said cover is in closed position.

4. A watchmans clock comprising a case, a clock-movement mounted therein, a winding and setting stem connected with said movement and projecting outside said case, said stem being longitudinally movable from winding to setting position, a cover for said case, and means carried by said cover for automatically moving said stem from setting to winding position when the cover is moved into locked position.

5. A watchmans clock comprising a case, a clock-movement mounted therein, a wind ing and setting stem connected with said movement and projecting outside the case, said stem being adapted to be partially withdrawn for setting purposes, a hinged cover for said case, a hasp carried thereby, and a lock moimted on said hasp whereby the cover is locked in closed position, said hasp being constructed to overlie and inolose the projecting portion of said stem and to move said stem inwardly from set-- ting to winding position when the hasp is moved to locking position.

6. A watchmans clock comprising a case, a clock-movement mounted therein, a rotatable staff projecting from said movement, and an indicator dial holder detachably connected to said staff, said holder including a stem, a disk carried thereby and indicator dial perforating pins mounted on said disk.

7. A watchmans clock comprising a case divided by a transverse partition into two compartments, a clock-movement mounted in one of said compartments, a rotatable staff projecting from said movement through said partition, and a dial holder including a post, a disk and dial holding pins detachably and frictionally engaged with the projecting portion of said sta ff.

8. A watchmans clock comprising a case divided by a transverse partition, a rotatable staff projecting from one face of said partition, and a bodily removable dial holder adapted to carry a registering dial, said holder including a "l6lCllI1 socket adapted to be frictionally and detachably engaged with said staff.

9. A watchmans clock comprising a case, a rotatable staff therein, and a bodily removable dial holder detachably engageable with said staff, said dial holder including a yielding socket for frictionally engaging the staff, a disk provided with means for engagement with a registering dial, and post by which said holder is moved relatively to the staff.

10. A watchmans clock comprising a case, a cover therefor. a registering device yieldingly carried by said cover, and means carried by said case for retracting said device from operative position when the cover is fully closed.

11. A watchmans clock comprising a case, a hinged cover therefor, a registering device yieldingly mounted on said cover and projecting inwardly therefrom, a lever pivotally carried by said cover and engaged with said registering device, and a fixed abutment mounted in said case in the path of said lever whereby said device is retracted from registering position when the cover is fully closed.

12. A watchmans clock comprising a case, a hinged cover therefor, a yieldingly mounted registering device projecting inwardly from said cover, and means including a lever carried by said cover and a fixed abutment mounted in said case for retracting said device from registering position when said cover is fully closed.

13. A watchmans clock comprising a case, a hinged cover therefor, a rotatable registering dial mounted within said case, a reg istering punch mounted on the cover, means for yieldingly urging said punch into registering relation with said dial when the cover is in approximately closed position, and means including a lever carried by the cover and a fixed abutment within the case whereby said punch is withdrawn from the dial when the cover is fully closed.

14. A watchmans clock comprising a case, marking mechanism mounted therein, a key adapted to actuate said marking mechanism, a guide for said key, and a receptacle arranged to receive the dust removed from said guide by the insertion of the key.

15. A watchmans clock comprising a case divided by a partition into two compartments, a clock-movement mounted in one 0t said compartments, marking mechanism mounted in the other compartment, a key adapted to actuate said marking mechanism, a. guide for said key, and a receptacle arranged to receive and contain the dust removed from said guide by the insertion of said key.

16. Awatchmans clock comprising a case, marking mechanism mounted therein, a key for actuating said marking mechanism, a channel-shaped guide for said key, and a dust receptacle mounted at the inner end of said guide in position to receive the dust displaced by said key.

17. A watchmans clock comprising a case, a dial marking mechanism mounted therein, a key for actuating said mechanism, and means engaging said. key upon insertion thereof into the case for preventing with drawal of the key until said key has been moved to actuate said marking mechanism.

18. A watchmans clock comprising a case, dial marking mechanism mounted therein, a key for actuating said mechanism, a yielding member arranged to engage said key immediately upon insertion thereof into the case so as to prevent withdrawal of the same,

and means for releasing said member from the key only after said key has been moved into cooperative relation with said marking mechanism.

19. Awatchmans clock comprisingacase, dial marking mechanism mounted therein, a key for actuatin said mechanism, ayielding device adapted to engage said key immediately upon insertion thereof into the case and prevent withdrawal of the key, and means actuated by said key upon its return stroke after engagement with the marking mechanism for releasin said device to permit withdrawal of the ey.

20. A watchmans clock comprising a case, dial marking mechanism mounted therein, a key for actuating said mechanism, a member adapted to engage said key immediately upon insertion thereof into the case to pre vent withdrawal of the key, and a key-actuated device for releasing said member from the key upon return movement of the key away from said marking mechanism.

21. In a watchmans clock, the combination of a case, dial-marking mechanism mounted therein, a key for actuating said mechanism, said key being provided with a notch, a member arranged to engage in said notch upon insertion of the key so as to prevent withdrawal thereof, and means for releasing said member upon return movement of the key away from the marking mechanism, said means including a pivotally mounted member provided with an inclined projection normally disposed in the path of movement of the key.

A watchman s clock, comprising a case, dial-marking mechanism mounted therein, a notched key for actuating said mechanism, a member adapted to engage in said not-ch upon insertion of the key, and means for releasing said member from the key, said means including a pivotally mounted member provided with a projection disposed in the path of said key, and a spring for retaining said members in normal position.

28. A watchmans. clock, comprising a case, dial-marking mechanism mounted therein, a key for actuating said mechanism, pivoted member adapted to control the withdrawal of said key from the case, and a key-actuated member pivoted on said first member for operating the same upon return movement of the key away from the marking mechanism.

ROY D. KING.

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