US1085828A - Lock. - Google Patents

Description

J. H. SHAW.

LOOK.

APPLICATION FILED FEB. l. 1912.

Patented Feb; 3, 1914.

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INVENTOR. 24 BY A TTORNEYS W! T NESSES:

a J. H. SHAW.

' LOOK.

AFPLIGATION FILED FEB. 1, 1912.

a v Patented Feb. 3, 1914.

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J. H. SHAW.

LOCK.

APPLICATION FILED 'rnB.1,"1912.

1,085,828. Patented Feb. 3, 1914.

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COLUMBIA PLANOGRAPH COVHWA'SHINGTON. D. C.

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UNITED STATES PATENT OFFICE.

JOHN H. SHAW, OF NEW HAVEN, CONNECTICUT, ASSIGNOR T0 SARGENT & COMPANY,- OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.v

LOCK.

Specification of Letters Patent.

Patented Feb. 3,1914.

To all whom it may concern:

Be it known that I, JOHN H. SHAW, a citizen of the United States, residing in the city of New Haven, county of New Haven, and State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

The invention refers to looks and particularly to hotel locks of the general type shown in patent to Nilliam J. Carroll, No. 898,434 dated Sept. 15, 1908. In locks of this kind, there are two dead bolts, one of which is adapted to be operated from the inside of the door, while the other is operated from the outside, there being a connection between them by which the protraction of one bolt whenthe other bolt is protracted will result in the retraction of the last named bolt, whereupon the first .named bolt can be retracted independently.

In a co-pending application filed July 22, 1911, by Irving D. Merritt, Serial Number 640,026, there is described a lock of the same general type described above, comprising a pivoted ward associated with the keyhole for the outside bolt and adapted to be locked automatically in position to prevent themtation of an ordinary key in said keyhole when the inside bolt has been thrown. In the lock last mentioned the ward is blocked against movement away from the outside keyhole by direct engagement with the projected inside bolt, so that after the inside bolt has been thrown, the outside bolt is retractable only by means of an emergency or other key suitably bitted to pass said ward.

The primary object of the present invention is to provide a lock of this general kind having a pivoted ward for one keyhole (as the outside keyhole) which may not only be locked in its obstructing position by one (the inside) bolt when it is protracted, butmayalso be locked in its obstructing position when the other (the outside) bolt is protracted.

The improvements relate further to the locking of the ward in blocking position by the outside bolt only when the latter is thrown by a special key, such as an emergency or display key, to the end that the door, if locked from the outside by one of such special keys, can only be unlocked from the outside by means of a special key. However, when the outside bolt is thrown by an ordinary key, such as a guest or master key, the ward is moved into its inoperative position so that said bolt can be retracted by any key of the series.

l/Vith these and other objects in view, the

being retracted. Fig. 3 is a fragmentary yiew of the lower portion of the lock showlng the 1ns1de bolt retracted and the outside bolt protracted by the guest or master key.

Fig. 4 is a fragmentary view of the lower portion of the lock showing the parts when the outside bolt has been projected by the display oremergency key. Fig. 5 is a fragmentary view of a portion of Fig. l with the tumblers of the outside bolt removed. Fig. 6 is a similar View, corresponding to Fig. 4. Fig. 7 is a similar View corresponding to Fig. 3; and Figs. 8, 9, 10 and 11 are detail views of the guest, master, display and emergency keys, respectively.

Referring to the drawings, the lock-case 15 having the face plate 16 is shown as containing an upper dead bolt 17 intended to be operatedfrom the inside of the room, and a lower dead bolt 18, intended to be operated from the outside. The relative positions of these dead bolts, however, with respect to the case are immaterial. The dead bolts are connected with each other by means of a coupling or connecting lever 19, as according to the application previously mentioned, the arrangement being such that when one bolt is protracted, the protraction of the other bolt will result in the retraction of the first bolt, after which the second bolt may be retracted independently. This result is due in part to the provision of the aforesaid coupling lever 19, and also to the provision of a slide 20 connecting the tum,- bler 21 of the dead bolt 17 with the several tumblers 22, 23, 24 of the dead bolt 18, in such a manner that all of the tumblers are operated simultaneously. lVhen the inside bolt 17 is thrown by means of a guest or other key, said key is blocked against a full rotation by means of an arm 19 on the coupling lever 19, as shown in Fig. 2, so that said inside bolt will have to be retracted before the key can be withdrawn.

In the present instance, the movable ward associated with the keyhole for the outside bolt, is pivoted on the same pivot 25 on which the tumblers 22, 23, and 24: are. pivoted. This ward, denoted by reference character 26, (Figs. 5 to 7) is provided with an upwardly and forwardly directed nose or extension 27, which lies directly beneath a portion 28 on the shank of the inside bolt 17 when said bolt is projected, so that it is then impossible to move the pivoted ward 2 upward beyond the position shown in Fig. 5, in which its rearwardly directed extension 29 is in such close proximity to the outside keyhole as to prevent the rotation in said keyhole of the guest key (Fig. 8) and the master key (Fig. 9). Hence when the bolt 17 has been thrown from the inside by the occupant of the room it is impossible to operate the outside bolt 18 by means of another guest key or a master key.

According to the present invention, the pivoted ward 26 is not only locked in its blocking position by the projection of the inside bolt, as above described, but it is also looked in blocking or inoperative position by the projection of the outside bolt. This is effected by providing the ward with a rearwardly directed lug 30, adapted to cooperate with the stump 31 of the outside bolt. Between this lug, or extension, and the tail or extension 29 is a space or recess 82.

l/Vhen the outside bolt is thrown by either the guest key (Fig. 8) or the master key (Fig. 9), the key-bit will strike the tail 29 of the pivoted ward, and inasmuch as said ward is then free to move (the inside bolt being retracted), it will be swung upward on its pivot 25 simultaneously with the protraction of the bolt, in such a manner that the stump 31 on the latter will enter the recess 32 of the ward, and thereby lock the latter in raised inoperative position, as shown in Fig. 7. If the inside bolt 17 is already protracted, the protraction of the outside bolt by the guest or master key will be prevented by the locking of the ward 26 by the inside bolt, as before explained, and it is therefore assumed that when the outside bolt is projected by the guest or master key, the inside bolt is in retracted position. hen the outside bolt has been thrown by the guest or master key into the position shown in Figs. 3 and 7, the same key will obviously be operative to throw back the bolt, owing to the fact that when the key is moved in a direction opposite to that first mentioned, it will not contact with the raised ward (Fig. 7).

Supposing the inside bolt to have been thrown, the same can be retracted from the outside of the door by the emergency key (Fig. 11), which is so bitted as to clear the ward 26 when saidward is held in its depressed position by the inside bolt. The throwing of the outside bolt by the emergency key retracts the inside bolt, and the outside bolt may then be retracted independently. Thus the possessor of the emergency key may gain access to the room at any time.

In looking the door from the outside by means of the emergency key or display key (Fig. 10), it is desirable that the guest key and master key be rendered inoperative, and this is provided for by the provision of the lug or extension 30 on the pivoted ward, which lug will underlie the stump 31 when the outside bolt is projected by a key (such as the emergency or display key), which does not strike the ward, as shown in Fig. 6. It will therefore be understood that in this position of the parts, the upward movement of the ward will be absolutely prevented by the stump on the projected outside bolt. Hence, when said bolt is thrown by a key bitted to clear the ward, the latter is automatically locked in position to block any key which will not clear the ward.

The guest key shown in Figs. 2 and 8 has a thick bit 50 which has to be provided with side wards 51 in order to pass fences 52 at the side of the outer keyhole. The display key (Fig. 10), the purpose of which is well understood in the art, is similar to the guest key in the particulars above noted, but it differs from the guest key in having long transverse cuts 53 to pass the pivoted ward, as previously described. shown in Fig. 9 has short transverse cuts or bitings 54, which are not suiiiciently deep to clear the pivoted ward. This key differs from the guest and display keys by having a thin bit which will freely pass, without the provision of special longitudinal grooves or wards, the fences 52, and other fences associated with the outside keyholes of other locks of the series. The emergency key shown in Fig. 11, is like the master key in this last mentioned respect, and also as regards the provision of end cuts or wheel wards 55, on the bit which permit the same to freely pass fixed bits or wards which may be associated with the outside keyholes of certain locks of the series. The emergency key differs from the master key, however, in having long cuts or bitings 53, like those in the display key, to clear the pivoted ward associated with the outside bolt as hereinbefore explained.

Both keyholes of the lock, that is, the keyholes for the inside and outside bolt-s respectively, are open on opposite sides of the case, but obviously in practice one keyhole will be blocked off or covered at one end by the wood of the door or by the escutcheon, while the opposite end of the other keyhole will The master key" be similarly closed. By manufacturing the lock with both keyholes open at opposite sides of the lock the latter is reversible as re gards the accessibility of the respective keyholes on opposite sides of the door, as will be understood.

It will, of course, be manifest that I have not attempted to describe the numerous modifications oi the construction which may be adopted within the scope of the invention.

What I claim is:

1. In a lock, the combination of two dead bolts, a keyhole for one of said bolts, and a pivoted ward associated with said keyhole and arranged to be locked in blocking position by the projection of either bolt; substantially as described.

2. In a lock, the combination of two bolts interconnected to move in opposite directions, a keyhole for one of said bolts, and a pivoted Ward associated with said keyhole and arranged to be locked in its blocking position by direct engagement with either of said bolts; substantially as described.

3. In a lock, the combination of two dead bolts interconnected to move in opposite directions, the projection of one bolt when the other bolt is projected causing the withdrawal of the second bolt, a keyhole for one of said bolts, a pivoted blocking device to prevent the rotation of a certain key in said keyhole, and means to lock said device in its blocking position by the projection of either bolt; substantially as described.

l. In a lock, the combination of a bolt having a shank, a bolt having a stump, a keyhole for one of said bolts, and a pivoted ward associated with said key-hole and locked in key-blocking position by engagement with said stump or by engagement with said shank; substantially as described.

5. In a hotel lock, an inside bolt, an outside bolt, and a pivoted ward associated with the outside bolt and having means to engage the inside bolt for locking said ward in its blocking position, and having other means to engage the outside bolt to lock said ward in its blocking position; substantially as described.

6. In a hotel lock, an inside bolt, an outside bolt, and a pivoted ward associated with the outside bolt, and having means to Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C.

engage the inside bolt for locking said Ward in its blocking position, and having other means to engage the stump of the outside bolt to lock said ward in its blocking position; substantially as described.

7. In a lock, the combination of a case having keyholes open at opposite sides of the door, a pivoted ward associated with one of said. keyholes, and locking mechanism in the case operative through either of said keyholes, and operable when so actuated to lock said ward in its blocking position; substantially as described.

8. In a lock, an inside bolt, an outside bolt having a stump, a series of keys to operate said outside bolt including an emergency key and a display key, and a pivoted ward associated with the keyhole of the outside bolt and locked in blocking position by the stump of said bolt when the latter is protracted by an emergency key or a display key, said ward being also looked in blocking position by direct engagement with the inside bolt when the latter is protracted; substantially as described.

9. In a lock, an inside bolt, an outside bolt, key-holes for said bolts at the inside and outside respectively of the door, tumblers for said bolts connected together to release said bolt-s simultaneously, a connection between said bolts whereby the protraction of one when the other is protracted retracts the second named bolt, a series of keys for operating the outside bolt including a display key and an emergency key, and a pivoted ward associated with the keyhole of the outside bolt and locked in blocking position by the protraction of said outside bolt by the emergency key or the display key, said ward being also locked in blocking position by direct engagement with the inside bolt when the latter is protracted, and being locked in non-blocking position by the protraction of the outside bolt by a guest key or a master key; substantially as described.

In witness whereof I have hereunto set my hand on the 29th day of January, 1912.

JOHN H. SHAW.

lVit-nesses SYDNEY F. SARGENT, BERTHA RAY.

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