US1374393A - Lock - Google Patents

Description

UNITED STATES PATENT omer..

FLOYD F.`RORABECK, OF AZUSA, CALIFORNIA.

LOCK.

Specicationof Letters Patent. Patented Apr, 12, 1921.

Application led March 7, 1918. Serial No. 221,081.

wise secured in a door, land comprising a4 latch and a bolt, the latch being operated'by the handle of the door and the bolt belng operated by a key. This is what may be regarded as the standard form of lockfor dwelling construction and must be of such a size and'shape asl to be readily secured within the body of an ordinary wood door.

In the commercial forms of such locks it is common practice for the mechanisniof the lock to be placed in a rectangular metal box which is somewhat thinner than the door and which is placed in a rectangular mortise cut in the door from the edge thereof. The utting of these mortises is a difficult and tedious matter and one that can only be entrusted to a skilled workman.

The principal object of my invention isto provide a lock in which the mechanism is contained in two cylinders which may be inserted in round holes bored with an auger in the edge of the door. By using such round holes it is possible to place the lock without using the chisel except in a very limited extent in cutting a shallow mortise for the face plates. I am aware that previous inventors have attempted touse locks in which the mechanism is contained in cylindrical members which are placed in auger holes, but so far as I- am aware none of the previous locks have been a success for the reason that .the two cylinders have been secured in substantially parallel relationship with each other, thus necessitating the boring of the two auger holes in practically parallel relationship which is a very hard thing to do even for a skilled workman.

Itis a further object of my invention to provide a lock in which the mechanism is inclosed in two cylinders suitable in size to be placed in aiiger holes bored in a door, and

which is so constructed that these auger holes can. vary widely fromparallelism withoutlmaking it difficult or impossible to place lthe lock.

In using'locks commercially, it is.v necesff' saryv to provide a latch which can be set to catch from either side. It is common practice to make these latches with an inclined face which slips easily over the latch plate and forces the latch into the door as the door is closing, but which hooks into an opening in a latch plate fixed in the door frame when the door is closed, the latch then being retracted when it is desired to open the door by turning the handle of the door. In practice, due to the fact that doors 'may swing either way, it is necessary .that

the inclined face of the latch be so arranged thatl it can be presented to either side. In many locks it is necessary for the carpenter who is placing the lock to take the lock apart and reverse the latch to suit the direction the door swings. This is very objectionable as it takes time and the parts of the lock are not alwaysteasy to handle so that they fall out and become lost or are put together in a faulty manner It is a further object of my invention to provide a latch mechanism which may be inserted in a door either right or left hand without disturbing the interior of the mechanism. l

Further objects and advantages will be made evident hereinafter, or to one skilled in handling locks, will be evident from a perusal ofthe following description and an examination of the drawing.

The invention 'consists of the novel arrangement and combination of parts as set forth hereinafter.

In the drawings, which are for illustrative purposes only, and which show one form of lock 'only in which my invention may be embodied,

Figure l is a view of a door equipped with a lock embodying my invention, and it will be observed that so far as the external appearance is concerned, the lock looks exactly like many forms of standard locks in common use.

Fig. 2 is a perspective View of the lock itself, the door being shown in dotted lines and the handles, handle plates, etc., being omitted for the sake of 'better illustrating the invention.

Fig. 3 is an elevation of the lock, partly .in section, through the center of the door.

Fig. 4 is a section on a plane represented by the line 4-4 of Fig. 3.

In the form of my invention illustrated in-th'se drawings, the door 11 is a wooden door of standard 'construction a The lock consists of a latch mechanism 12 having a latch 13 and a bolt mechanism 14 having a bolt 15. The latch is operated as will later be explained by the square shank 16 of the handles 17 and the bolt is operated by a key 18. Ornamental handle plates 19 may be used on either side of the door through which the key. may be inserted through a keyhole 20.

The latch mechanism comprises a round tube 21 of small enough diameter to go in an auger hole which may be readily bored in the door 11. The forward end of the tube 21 is rigidly secured to a latch plate 22. This latch plate has a square hole through which the latch 13 may project and has two screw'holes 23. The plate 22 is symmetrical about the center line ofthe latch mechanism 12 and the tube 21 in both a plane passing through the center of the door and a plane at right angles thereto passing throu vh the axis of the tube 21. The screw holes 23 are also symmetrically located 4with regard to that axis. As a result the tube 21 may be inserted in the door as shown, or it may be 'reversed soV that the inclined face of the latch will be on the opposite side of the door, thus allowing the door to swing either way and allowing the carpenter 'to place the latch mechanism 12 in the door either way without disturbing the interior of that mechanism.

The bolt mechanism 14 is placed in a tube 31 which in turn is secured rigidly to a bolt plate 32 which need not be symmetrical and which I find convenient to equip with only one screw hole' 33.

The plates 22 and 32 ,are set into a shallow mortise in the edge of the door and each is allowed to ind its own bearing independent of the other. If the two auger holes are bored very much out of line, the tubes 21 and 31 will nevertheless slip readily in place as they have no common connection that necessitates their being parallel. After the mechanisms 12 and 14 are put in place a lock plate 41 is placed-over the plates 31 and 21 so that any angularity or irregularity in their location is covered. By making the two mechanisms 12 and 14 independent and independently securing them in the door I am able to place them without using skilled labor, and without using any great pains as to the distance apart between the auger holes or as to getting these holes parallel. I believe that previous attempts to use cylinder locks have failed for lack of this very essential feature.

The type of mechanism used in the tubes 12 and 14 is more or less immaterial to the above advantages. l have, however, shown practical and satisfactory forms of latch and ner/asas bolt mechanisms in the drawing in which 61 is a latch body on which the latch 13 is formed, this body having a central opening 62 through which the shank 16 passes. cam 63 is rigidly secured on the shank 16 and is so formed that it engages two projections 64 A:formed on the body 61. A com- Abutments 74 are formed on either side ot the openings 73. Tumblers 75, `carried on springs 76, are located at either side of the body 71 and the springs 76 are rigidly fixed in the tube 31. -llVhen the key 18 is inserted it will be stopped by the body 71 unless it is of the proper size and shape to pass through the opening 73. 1t so, it will, on being turned, first lift the tumblers out of their notches 4and then, by contacting with the abutments 74, will throw the bolt from open to closed position or vice versa.

What ll claim is:-

LA lock comprising a latch mechanism, a bolt mechanism, each of said mechanisms being mounted inside a cylihdrical tube of proper size to slip readily inside a standard wooden door, a flat latch plate rigidly secured to the tube which carries the latch mechanism, a fiaty bolt plate rigidly secured to the tube which carries the bolt mechanism, anda lock plate fitting in the same mortise as said latch and said bolt plate completely hidin and covering said plates.

2. lock comprising a latch mechanism, a bolt mechanism, each of said mechanisms being mounted Within a cylindrical 'tube of proper size to slip readily inside a standard Wooden door, a securing plate on the latch mechanism seated in a mortise in the door, a plate secured to the bolt mechanism seated in the same mortise, a lock plate fitting over said bolt plate and latch plate in the same mortise, and fasteningv means consisting of screws on said lock plate extending through the latch plate and bolt plate into the door, said plate secured to the bolt mechanism being a separate plate from the securing plate on the latch mechanism.

In testimony whereof, l have hereunto set my'hand at Los Angeles, California, this 1st day of March, 1918.

rLoYn r. nonasncrr.

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