Title:
Holding device
United States Patent 2400801


Abstract:
This invention relates to a holding device and refers more particularly to a lock adapted for use on airplanes and other moving vehicles as well as for a variety of other purposes. An object of the present invention is the provision of a lock which is simple and inexpensive in construction...



Inventors:
Albin, Jeremiah W.
Application Number:
US50440343A
Publication Date:
05/21/1946
Filing Date:
09/30/1943
Assignee:
Albin, Jeremiah W.
Primary Class:
International Classes:
F16B5/10
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Description:

This invention relates to a holding device and refers more particularly to a lock adapted for use on airplanes and other moving vehicles as well as for a variety of other purposes.

An object of the present invention is the provision of a lock which is simple and inexpensive in construction and sturdy and reliable in operation, and which will withstand successfully vibrations and other shocks and forces exerted upon it.

Another object is the provision of a lock provided with sturdy and reliable resilient or elastic means which are compressed in the course of the locking and unlocking movements of the key and which return to their initial positions at the end of these movements.

Other objects of the present invention will become apparent in the course of the following specification.

In accomplishing the objects of the present invention it was found desirable to combine a latching element having surfaces which are pressed by the key in the course of its locking and unlocking movements, with an elastic or resilient disk carrying the latching element and receiving the pressure exerted upon the latter. The disk is deformed under the influence of this pressure and resumes its original form when pressure ceases.

The disk may have the form of an annular metal plate provided with uniformly spaced perforations, the webs between the perforations acting as resilient fingers which are depressed in the course of the locking and unlocking movements and which resume their original positions when the pressure ceases.

On the other hand, the disk may consist of leather or similar material which is deformed by pressure and which returns to its original position as soon as pressure is released.

The invention will appear more clearly from the following detailed description when taken in connection with the accompanying drawings showing by way of example preferred embodiments of the inventive idea.

In the drawings: Figure 1 is a rear view of a lock constructed in accordance with the principles of the present invention.

Figure 2 is a front view of the lock.

Figure 3 is similar to Figure 1 and shows the lock on an enlarged scale in its locking position.

Figure 4 is a section along the line 4-4 of Figure 5. l Figure 5 is a section along the line 5-5 of Figure 3.

Figure 6 shows the lock in side elevation.

Figure 7 shows the lock in a position in which the resilient disk is being depressed from the position shown in Fig. 3.

Figure 8 illustrates the elastic disk.

Figure 9 shows the key carried by the cover plate.

Fig. 9a is an exploded perspective view of the latching member and frame shown in Fig. 1.

Figure 10 is a side elevation of a somewhat differently constructed lock.

Figure 11 shows a leather disk used in the lock l5 illustrated in Figure 10.

The lock illustrated in the Figures 1 to 9 is used in conjunction with a cover plate 15 and a base plate 16.

As shown in Figure 9, the cover plate 15 carries a key 17 and is used to hold that key. For that purpose, the plate 15 comprises an inwardly bent frustum-shaped portion 18 enclosing an opening 19 and adapted to receive the frustum-shaped portion 20 of the key 17.

The shank 21 of the key is cylindrical in form and carries a locking bar 22 which may have the form of a pin extending on opposite sides from the shank 21. The central portion of the locking bar 22 may have corrugated surfaces 23 to facilitate the engagement between the locking bar 22 and the shank 21.

The key 17 is provided with an outer transverse groove 24 which may have a curved bottom 25. The groove 24 is adapted to receive any suitable instrument used for turning the key.

In the absence of such instrument, the circular shape of the bottom 25 of this groove will make it possible to turn the key by inserting an edge of a coin or any other suitable circular body into the groove 24.

The base plate 16 includes a frustum-shaped portion 26 which is somewhat wider than the portion 18 and which is adapted to be located over that portion. The frustum-shaped portion 26 encloses an opening 27 which is also larger than the corresponding opening 19 of the plate I5.

The latching member 28 which cooperates with the key 17 for locking purposes, has a central 0 sleeve 29 which is guided in the opening 27 and which is used to hold the latching member 28 upon the plate 16. The latching member 28 has a central opening 30 in the sleeve 29 through which the key 17 extends. The latching mem5 ber 28 is also provided with an inner or central portion 28a from which a plate-like flange 61 extends. The central portion 28a has downwardly inclined surfaces 41 and 42.

Two recesses 31 and 32 are located diametrically opposite each other and in communication with the opening 30.

As shown in Figure 1, the recesses 31 and 32 are used to receive the projecting ends of the locking bar 22 of the key 17 in the unlocked position of the device. 1 The upper surfaces of the latching member 28 include two stops 33 and 34 situated next to the recesses 31 and 32 respectively.

The stop 33 has a side surface 35 which is engaged by the locking bar 22 and which stops 1 it at the end of its unlocking movement.

The stop 34 has a similar surface 36 stopping the opposite end of the locking bar in the course of this unlocking movement.

Two rills or grooves 37 and 38 are situated dia- 2 metrically opposite each other and approximately at an angle of 90° to the recesses 31 and 32.

The side surface 39 of the stop 33 merges into the groove 37 and serves as a stop for the locking bar in the course of its locking movement. A 2 similar side surface 40 of the stop 34, arrests the opposite end of the bar 22 at the end of the locking movement.

The surface 41 extending between tie groove 37 and the stop 34, is upon a higher level than the bottom of the groove 37, but lower than the upper surfaces of the stops 33 and 34. The surface 42 extending between the groove 38 and the stop 33 is also on a higher level than the bottom of the groove 38 and lower than the upper surfaces of the stops 33 and 34. The surfaces 41 and 42 are somewhat inclined downward in a direction toward the opening 30 and have level tracks 43 and 44 respectively for the projecting portions of the locking bar 22.

The locking bar 22 moves over the portions 43 and 44 of the surfaces 41 and 42 in the course of the locking and unlocking movements and thereby exerts pressure upon the latching member 28.

The member 28 is prevented from turning by a frame 45 which includes a raised central portion 46 and two end portions 47 and 48. The end portions 47 and 48 are firmly connected to the base plate 16 by rivets 49 and 50.

The middle raised portion 48 of the frame 45 has a central opening 51 which is preferably rectangular in form and which encloses the central portion 28a of the latching member 28 (Figure 3) in the horizontal plane just above the flange 61 (Figure 5).

The latching member 28 has two parallel side surfaces 52 and 53 which are located within the opening 51 and which may be engaged by the edges of the webs 54 and 55 of the middle portion 46. Due to this arrangement, the turning of the latching member 28 is effectively prevented.

The latching member 28 has a plate-like flange 61 which extends from the central portion 28a of the latching member and the adjacent sleeve 29 (see Fig. 5) and which is located under the webs 54 and 55 of the frame 45. The outer edge of the flange 61 is circular in form and may be somewhat less in diameter than the outer edges of the resilient disk 56 (see Fig. 3). As shown in Figure 5, the flange 6I has surfaces inclined toward the baseplate 16.

In accordance with the present invention, the resilient member or disc 58 is interposed between the latching member 28 and the portion 26 of the base plate 18.

The member 56 is illustrated separately in Figure 8 and is metallic and has the shape of an annular disc provided with uniformly disposed openings or perforations 57.

The openings 57 are so arranged that fingers or webs 58 are formed between them. The webs 58 are used to connect the inner ring portion 59 with the outer ring portion 60.

As shown in Figure 5 and 7, the disk 56 is placed 3 upon the portion 2 of the plate 16 with the inner portion 59 of the disk 56 engaging the upper edges of the portion 26. At the same time, the outer portions 60 of the disk 50 are engaged by the outer edges of the flange 61, constituting a part of the member 28. Thus, the resilient disk 56 is effectively interposed between the latching member 28 and the base plate 16. The disk 56 is made of such material, and the perforations 51 are so disposed, that the disk acts as a resilient ele0 ment which is depressed in the course of the locking and unlocking movements of the key 17 and which is released at the end of these movements.

In the unlocked position, shown in Figure 1, the locking bar 22 is located in the recesses 5 31 and 32. In order to lock the device, the key 17 is turned counterclockwise and the locking bar 22 is thereby caused to move upon the tracks 43 and 44 until the locking bar reaches the grooves 37 and 38. In the course of this locking move30 ment, the locking bar presses against the latching member 28 and this member in turn bends the disk 56 in the manner illustrated in Figure 7.

When the locking bar 22 is moved beyond the tracks 43 and 44 and enters the grooves 31 and 35 38, its pressure upon the latching member 28 is released and then the resilient disk 56 moves back into the position shown in Figure 5.

The webs 58 of the disk 56 act as resilient fingers allowing the required return movement of 40 the disk.

In the construction shown in Figures 10 and 11, the above-described resilient disk is substituted by an elastic disk 73 which may be made cf leather or similar elastic material and capable . of returning to its original form after pressure is released. As shown in Figure 10, the elastic dipk 70 is located between the flange 6! of the latchins member 28 and the frustum-shaped portion 25 of the plate 16. In other respects this device is Ssimilar to the one previously described.

In the course of the locking and unlocking movements of the locking bar 22 of the key IT. the elastic disk 70 is compressed by the pressure of the bar 22 upon the member 28. The disk 70 -5 returns to its original position as soon as this pressure is released.

It is apparent that the examples shown above have been given by way of illustration and not by way of limitation and that the above-described C0 illustrations are subject to wide variations and modifications without departing from the scope or intent of the present invention. All of these variations and modifications are to be included within the scope of the present invention.

05 What is claimed is: 1. A locking device, comprising in combination with a cover plate, and a base plate, a latching member having inclined surfaces adapted to be pressed by a locking bar in the course of its lock70 ing and unlocking movements, and having recesses adapted to receive said locking bar in its unlocked and locking positions, a locking frame enclosing said latching member, means engaging said locking frame and said base plate and 75 firmly connecting said locking frame to said base plate, and a resilient disc located between said base plate and said latching member, and bearing on both, said disc being subjected to bending pressure in the course of said locking and unlocking movements.

2. A locking device, comprising in combination with a cover plate, and a base plate, a latching member having inclined surfaces adapted to be pressed by a locking bar in the course of its locking and unlocking positions, and an annular 1 metal disc located between said base plate and said latching member and bearing on both, said disc having perforations therein and being resilient by the locations of said perforations and the thickness of the disc, said disc being sub- li jected to bending pressure in the course of said locking and unlocking movements.

3. A locking device, comprising in combination 'with a cover plate, and a base plate, said base plate having an opening therein through which a key is adapted to extend, a latching member having a central sleeve portion engaging the edges of said opening, said latching member having a middle portion and having recesses located close to said opening, said latching member further having inclined portions, said inclined portions being adapted to be depressed by a locking bar of the key in the course of its locking and unlocking movements, said recesses adapted to receive said locking bar in its unlocked position, and said latching member further having a circular flange portion having surfaces which are in the direction of said base plate, and an annular resilient disc having an inner portion carried by said base plate and an outer portion engaged by the inner surface of said circular flange, whereby said resilient disc carries said latching member, said resilient disc being subjected to bending pressure in the course of said locking and unlocking movements.

4. A locking device comprising in combination with a cover plate, and a base plate having an opening formed therein, said base plate further having a raised portion enclosing said opening, a latching member having a central sleeve portion 0 engaging the edges of said opening, a middle portion, a pair of outer inclined portions situated upon said middle portion on opposite sides thereof, two grooves formed in said middle portion and situated adjacent said inclined surfaces on oppo5 site sides of the opening of the middle portion said grooves adapted to receive a locking bar in its locking position, and cut-out portions formed in said middle portion and receiving said locking bar in its unlocked portion, and a circular flange Sortion having surfaces which are inclined in the direction of said base plate, a locking frame having an opening to receive portions of said latching member, said last mentioned opening having portions firmly engaging said latching member so as to prevent rotation thereof, said locking frame further having portions firmly connected to said base plate, and an annular metallic disc having perforations formed therein and comprising an inner portion carried by the raised portion of said base plate and an outer portion engaged by the inner surfaces of said latching member, whereby said disc carries said inclined portions, said disc being subjected to bending pressure in the course of said locking and unlocking movements.

JEREMIAH W. ALBIN.