US2855935A

US2855935A - Paper holding device

Info

Publication number: US2855935A
Application number: US510706A
Authority: US
Inventors: Emmett P Ham
Original assignee: JAMES O HAM
Current assignee: JAMES O HAM
Priority date: 1955-05-24
Filing date: 1955-05-24
Publication date: 1958-10-14
Anticipated expiration: 1975-10-14

Description

Oct. 14, 1958' E. P. HAM

PAPER HOLDING DEVICE Filed May 24, 1955 2 Sheets-Sheet 1 I Emmet! P. Ham

IN V EN TOR.

0d. 14, 1958 E, H 2,855,935

PAPER HOLDING DEVICE Filed May 24, 1955 v 2 Sheets-Sheet 2 Fig. 6

, E mme H P.- Ham INVENTOR.

PAPER HUL'DING DEVIGE Emmett P. Ham, Goldsboro, N. C., assignor of fifty percent to James '0; "Harm, Goldsboro, N. C.

Application May 24, 1955-, SerialNo. '510,706

2 Claims. (Cl. 129-11) ,ment is imparted to the other of the lock bars automatically.

Another object of this invention is to provide an improved mechanism that simultaneously operates both lock bars of a paper holding device upon the movement ,of one lock bar, the mechanism including a crank so connected to the two lock bars whereby when one of the lock bars is elevated, the other lock bar is automatically elevated the same amount.

A further object of'this invention is to provide an improved mechanism for simultaneously operating twolock bars of a paper holding device upon the movement of one of the lock bars, the mechanism including cam plates .carried by shank portions of the lock bars, there being connected to the cam plate a tie rod, a crank, and a compression member, the tie rod, ,the crank and the compression member cooperating to simultaneously elevate and rotate the lock'bars upon like movement of one of the lock bars, the compression member. serving to retain the lock bars in selected positions.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is an elevational view of the paper holding device, which is the subject of this invention, and shows the general details thereof, one of the impaling posts having an upper portionthereof broken awayand shown in section and open positions of the lock bars being shown in dotted lines;

Figure 2 is a side elevational view ofthe paper holding device of Figure 1 and further shows the details thereof,

the open positions of the lock bars being shown in dotted lines;

Figure 3 is a top plan view of the paper holding device of Figure l, the open positions of the lock bars being shown in dotted lines;

Figure 4 is a fragmentary horizontal sectional view taken through the base ofthe paper holding device at an intersection between the upper and lower sections thereof and shows the specific details of the mechanism for operating the lock bars when the lock bars are in cooperating position with respect to the impaling posts;

Figure 5 is an enlarged fragmentary horizontal sectional view similar to Figure 4 and showsthe' lock bars Patented Oct...14, 1958 ice in rotated positions,'the lock bars being moved to open positions, a portion of one of the cam plates being broken away and .shown in section inorder to clearly illustrate the relationship between. the cam plate and the crank;

' Figure 6 is an enlarged fragmentary vertical sectional view taken through the base of the paper holding device and shows the general relationship of the components of the mechanism for operating the lock bars when the lock bars are in their locking positions; and

Figure 7 is afragmentary vertical sectional view similar to Figure 6 and. shows the relationship or the components of the mechanism when the lock bars are 'elevated for the purpose of releasing them from the impaling posts.

. Referring now to the drawings in detail,it will be seen that there is illustrated the paper holding-device, which is the'subject of this invention, the paper holding device being referred to in, general by the referencenumeral iii. The paper holding device 10 includes a generally rectangular base, which is referred to in general by the reference numeral 12. 'Thebase 12 is' formed in-sections andin'cludes an upper section 14 and a lower section 16. The base 12 is hollow, as is best illustrated in Figure 6.

'The base 12 includes forwardly extending parts 18 which have extending upwardly therefrom tubular impaling posts 20. The impaling posts 20 pass'through the sections 14. and 16 "ofthe'base 12 and serve to secure these sections together. i 'The sections -14 and 16 of the base 12 are further connected together by suitable eyelets 22.

Pivotally connected to rear portions .ofthe base 12 are

arched lock bars

24 and 26. The

lock bars

24 and 26 are identical inconfiguration and cooperate with the impaling posts 20. It is to be noted that the impaling posts 20 have upper ends 28 which are cut at an angle to facilitate the impaling of paper thereon and at the same time, to permit the engagement of the free ends of the lock bars 24 and26 therein.

Referring now to Figure 4 in particular, it will be seen that the lock bar 24 includes ashank portion 30 which extends downwardly into the base12 and is suitably journaled therein. The shank 30 passes downwardly through the top section 14 and is journaled withrespect to the top section 14. 'The lower end of the shank portion 30 is journaled-and mounted. for vertical sliding movement in a boss 32.

Carried by the shank portion 30 adjacent the .lower end thereof is a plate 34 which is generally frusto-conical in plan. The shank portion 30 passes through. the reduced part of the plate 34 and the plate 34'includeswhat may be considereda base edge 36. Extending through the plate 34 adjacent the. base edge 36 thereof at opposite ends thereof are bores 38and 40.

The base edge 36 faces. inwardly when the lock bar 24 iscin a closed position cooperating with its associated impaling post Ztl. Formed in the forward edge and the base edge 36 of the plate 34 is a relatively deep groove 42. The outline of the groove 42 is best illustrated in Figure 5.

The lock bar 26 includes a vertically extending .shank portion 44. The shank portion 44 extends down through the top section 14 of the base' 12-and it is suitably journaled with respect thereto. 'The lower end of. the shank portion 44 is disposed within a boss 46 carried by the bottom section 16'within the interior thereof and is mounted with respect thereto for both pivotal and vertical movement. Carried bythe shank-portion 44 adjacent the lower end thereof is a plate 48.

The plate 48, like the plate 34, is generally frustovconical in outline and includes a base edge 50. The

shank portion 44 extends through the reduced part or the plate 48 and when the lock bar 26 is in a closed position, the base edge 50 extends generally towards the rear of the base 12.

Extending through the plate 48 adjacent the base edge 50 at opposite ends thereof are

bores

52 and 54. Also, there is formed in the inner and forward edges of the plate 48 a horizontally disposed groove 56. The outline of tie groove 56 is best illustrated by dotted lines in Figure In order that the lock bar 24 may be urged downwardly into locking telescopic relation with respect to the upper end of its associated companion post 20, there is provided a resilient member in the form of a coil spring 58. The coil spring 58 is engaged on the lower part of the shank portion 30 and engages both the underside of the top part of the upper section 14 and the upper surface of the plate 34. A similar coil spring 60 is carried by the shank portion 44 and engages the upper surface of the plate 48 to urge it downwardly.

In order that the two

lock bars

24 and 26 may be simultaneously elevated upon the vertical movement of one of the lock bars, there is provided a crank which is referred to in general by the reference numeral 62. The crank 62 includes an elongated main journal portion 64 which terminates in a pair of forwardly extending crank arms 66. The crank arms 66 terminate in outwardly extending end journals 68. The end journals 68 are disposed in the recesses or

grooves

42 and 56. Thus, when 'one of the lock bars 24and 26 is moved vertically, its

associated shank portionis moved vertically to impart vertical movement to its cam plate. Upon the vertical movement of one of the

plates

34 and 48, the crank 62 is pivoted to impart like vertical movement to the other of the plates.

In order that the crank 62 may be mounted for suitable vertical pivotal movement, the main journal portion 64 is seated in seats 70 formed in upper ends of pins 72. The pins 72 extend upwardly from the bottom part of the lower base section 16. The upper base section 14 is provided with depending pins 74 which align with the pins 72 and cooperate to position the crank 62.

Extending between the

plates

34 and 48 is a tie rod 76. The tie rod 76 has one end thereof engaged in the bore 40 and the opposite end thereof engaged in the bore 54. It is to be noted that the

bores

40 and 54 are disposed remote from each other. Further, the tie rod 76 is disposed in cross relation between the

shank portions

30 and 44 so that when one of the

plates

34 and 48 are rotated in one direction, the other of the plates is rotated in the opposite direction. Accordingly, movement of one of the lock bars 24 and 26 from a closed position to an open position will result in the like movement of the other of the lock bars. Further, a reversal of this movement may be likewise efiected.

In order that the lock bars 24 and 26 may be selectively retained in open and closed positions, there is provided a compression member which is referred to in general by the reference numeral 78. The compression member 78 is in the form of a length of spring wire 80 provided intermediate its ends with loops 82. The ends of the spring wire 80 are engaged in the

bores

38 and 52. It is to be noted that these bores are disposed in transverse alignment with respect to each other in all positions of the plates 34 and 4S and that when the

plates

34 and 48 are in selected ones of their two positions, the ends of the spring wire 80 are disposed on opposite sides of the

shank portions

30 and 44. By thus ecc'entrically mounting the compression member 78, the compression member 78 urges the movement of the lock bars 24 and 26 to desired positions after the compression member 78 has passed a dead center position. Further, it serves to retain the lock bars 24 and 26 in selected open or closed positions.

From the foregoing description of the present invention, it will be readily apparent that there is provided suitable mechanism for automatically moving one of the lock bars 24 and 26 to a desired position upon the like movement of the other of the lock bars. Further, there is provided suitable means for retaining the lock bars in selected positions. Also, all such mechanism is so constructed and arranged whereby it may be conveniently mounted within the hollow base 12.

In order to prevent accidental damage to the mechanism for automatically operating the lock bars 24 and 26 as well as damage to both the lock bars 24 and 26 and the impaling posts 20 by attempting to turn the lock bars 24 and 26 without first elevating them, there is provided a pin 84. The pin 84 is carried by the plate 48 and extends downwardly therefrom. When the lock bars 24 and 26 are in closed positions, the pin 84 is aligned with and seated in an opening 86 formed in the boss 46. When the lock bars 24 and 26 are elevated and turned to open positions, the pin 84 moves upwardly out of the bore 86 and rides on the upper surface of the boss 46. Thus, the pin 84 also serves to retain the free ends of the lock bars 24 and 26 in elevated positions at all times except when they are aligned with the upper ends of the impaling posts 20, at which time, they may be telescoped therein.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

1. A paper holding ,device comprising a hollow base, a pair of impaling posts extending upwardly from said base in spaced relation, said impaling posts having tubular upper ends, a pair of arched lock bars projecting upwardly from said base and having upper ends normally seated in said impaling posts, said lock bars having shank portions extending down into said base and journaled relative to said base 'for rotation and vertical sliding movement, plates carried by the lower parts of said shank portions within said base, resilient means engaging said plates and normally urging said lock bars down into locking engagement with said impaling posts, a tie rod extending between said plates and connected thereto in crossed relation relative to a line between said shank por tions whereby movement of one of said plates in one direction results in rotation of the other of said plates in an opposite direction, means connected to said plates for simultaneously vertically moving one of said plates upon manual vertical movement of the other of said plates, said last mentioned means being in the form of a crank, said crank including a main journal portion, crank arms extending from opposite ends of said main journal portion in spaced parallel relation, said crank arms terminating in oppositely and outwardly extending end portions, means rotatably mounting said main journal portion in said base, said plates having peripheral grooves in vertical faces thereof, said end portions being seated in said grooves in all positions of said plates.

2. A paper holding device comprising a hollow base, a pair of impaling post's extending upwardly from said base in spaced relation, said impaling posts having tubular upper ends, a pair of arched lock bars projecting upwardly from said base and having upper ends normally seated in said impaling posts, said lock bars having shank portions extending down into said base and journaled relative to said base for rotation and vertical sliding movement, plates carried by the lower parts of said shank portions Within said base, resilient means engaging said plates and normally urging said lock bars down into locking engagement with said impaling posts, a tie rod extending between said plates and connected thereto in crossed relation relative to a line between said shank portions whereby movement of one of said plates in one direction results in rotation of the other of said plates in an opposite direction, means connected to said plates for simultaneously vertically moving one of said plates upon manual vertical movement of the other of said plates, said last mentioned means being in the form of a crank, said crank including a main journal portion, crank arms extending from opposite ends of said main journal portion in spaced parallel relation, said crank arms terminating in oppositely and outwardly extending end portions, means rotatably mounting said main journal portion in said base, said plates having peripheral grooves in vertical faces thereof, said end portions being seated in said grooves in all positions of said plates, and a lock pin and socket connection between said base and one of said plates preventing rotation of said lock bars except when said plates are in elevated position.

References Cited in the file of this patent UNITED STATES PATENTS 366,817 Cooke et al July 19, 1887 883,543 King Mar. 31, 1908 1,022,456 Yawman Apr. 9, 1912 1,155,382 Teamer Oct. 5, 1915