US2186300A - Stand - Google Patents

Description

Patented Jan. 9, 1940 UNITED STATES PATENT o'FFlCE This invention relatesy to stands or similar supports, and more particularly toadjustable stands` or racks for supporting books, magazines, newspapers, drawings, music compositions or the like 5. in a variety of positions conveniently accessible to the reader, whether hey is standing, seated, or lying in bed.

The general object of the vinvention yis to provide a novel and improved stand of ythe 'type described. f

A more specic object of the invention is the provision of a novel rack for holding printed matter orv other articles of various sizes for ready Another object ofv the invention is the provision of novel and improved means 'for' adjusting the height of the rack from the iioor and also laterally from the supporting standard to permit its being employed in numerous ways as, for eX-.y

ample, by an orchestra conductor standing, a reader or musician sitting, or an invalid lying in bed.

In its preferred embodiment, the invention further contemplates the provision of supporting means for the rack whereby it may befofset from the vertical standard and, although carrying considerable weight, will be prevented from bending the standard or setting up excessive strains therein.

Other objects and features of novelty will be apparent'frbm the following specification lwhen read in connection with the accompanying draw'-` ing in which certain embodiments of my invention are illustrated by Way of example.

In the drawing:

Figure l'is a View in elevation of a stand eml bodying the principles of my invention,` a .por-

tion of the lower end being shown in vertical section;

Figure 2 is an enlarged detail view partly in elevation and partly in section of a lportion of the horizontal member of the stand;

Figure 3 is a vertical transverse sectionallview" of the` same member taken on line 3-3 of Figure Novel retaining Figure .4 is an enlarged detail sectional view taken on line 4-4 of Figure 1;

Figure 5 is a fragmentary view in elevation of a modified form of stand in which is incorporated a modified form of raising means; 5

Figures 6 and '7 are horizontal sectional views of this alternative embodiment taken on lines 6 6 and 'I-l respectively of Figure 5;

Figure S is a fragmentary View in elevation of an alternative form of connection between the 10 vertical standard and the cross arm; and

Figure 9 is a fragmentary view in elevation l.of an alternative arrangement for reinforcing the tripod legs.

AIn Figure l of the drawing, the rack upon 15 which the printed ,matter or other articles are held is indicated generally by the reference numeral I0 and is supported upon the end 'of a horizontal arm II extending from a vertical I standard I2, this standard being supported upon 2n a tripod base I3.k

In order to adjust the position vof the rack I0 for `a-variety of uses, means are provided for extending the stand in a vertical direction to alter its height from the floor or supporting sur- 25 face, and other means are provided for rotating the rack I0 in a vertical plane andfor locking it in any ofa plurality of inclined positions. These means Will noW be described in detail.

The standard I2 comprises a lower tubular 30 section I5 around Which is disposed va ring I6 which is slidable upon the member I5 and provided with means (not shown) for clamping it rigidly in selected positionsthereom Ears I1 are provided on the sleeve I6 to which are pivoted 35 the upper ends of the legs IB, three of these legsv being indicated in the drawing `as spaced apart. It is obvious that additional legs could be provided, but three is, of course, the minimum number possible for independently supporting the standard. Braces I9 are pivoted to an inter-- mediate portion of thelegs and are also pivotally connected to the ears 20 of a ring or sleeve 2| i carried by the lower end of the tubular member I5. It Will be seenthat by adjusting the sleeve 45 orA ring I6 vertically upon the standard, the legs may be spread to any desired extent or the tripod base folded against the sides of the standard.

' 11n Figure 9 the legs I8 `are provided at their ladditional weight to be supported by the rack. u

An alternative reinforcing feature is illustrated in Figure 1 and comprises a relatively large disc or plate 2B which is keyed at the lower end of the threaded rod 29 which is screwed int-o the open threaded interior of the tubular member I5, thus providing a vertical adjustment for the disc which will be pressed iirmly against the iloor when heavy weights are to be carried by the stand.

The upper end of the tubular member I is also interiorly threaded for the reception of the lower threaded end of the extension member 30. The threads 3l on this member preferably have a pitch of one inch, for a fairly rapid extension ofl the telescoping standard I2. Into the upper end of the rod 3B there is ins-erted the narrowed shank 32 of the bracket 33 which has a laterally extending transversely flattened arm 35. Upon the arm 35 there is adjustably disposed a connecting element or rider 36 vwhich is providedwith a rectangular slot for the close reception of this arm and also an upward extension provided with an opening for the reception of the flat vertically disposed cross arm II.

To provide a proper line contact for the armr II the upper slot of the member 35 is formed with a relatively sharp fulcrum edge 3l. The member 36 is provided with holes which are adapted to be brought into registry with certain of the series of holes formed in the arms 35 and II, in order to adjust the fulcrum of the cross arm Il various distances from the axis of the standard I2. The rearwardly projecting short end of the arm II is provided with 'a series of notches 39 within which the upper end of the tie member 49 may be received. The rear end of the member d' is connected to the hook portion 4I of the ring 42 which is carried by the tubular member I5 of the standard I2. The tie memberV lI may be extended and retracted as by means of the turnbuckle 43.

y It' the horizontal arm Il were pivoted directly above the top of the vertical standard I2, the forces acting on the standard would tend to bend itin a right hand or clockwise direction as viewed in Figure 1. However, by iulcruming the arm at a point offset toward the left, as in Figures l, 5 and 8, the top of the standard l2is constrained to bend toward` the left and to tend to offset the general bowing oiI the standard I2 in the opposite direction especially when an exceptionally heavy weight is placed upon the rack ID. This, together with lthe slight pull toward the left by the tie memberA 40, tends to maintain the standard I2 in a vertical position and adds to the strength of the entire Support.

An alternative connection betweenV the crossy I2 is illustrated in stand, means are provided` for locking the arm II in positions directly above each one of the legs I8. This means comprises set screwsv t5 which are disposed about the tubular member I5Y at intervals corresponding to the intervals between the legs i8, these intervals being 120 in the embodiment illustrated. Holes or recesses 46 are provided in the threaded portion of the shaft or rod 30 for the reception of these set screws 45.

An alternative means for raising the rack Illv by then extension of the standard I2 is illustrated in Figures 5,6 and 7 of the drawing. In this embodiment the tubular member I5 of the standard is extended vertically so that it is several inches higher than the corresponding member I5 in the previously described embodiment. Upon this member I5 there is slidably disposed an elongated sleeve 5B carrying upon its ends the rings 42 having lugs or ears 'il' which are connected with the notched short end of the arm II by means of the extensible tie members All. To the upper end of the elongated sleeve member 50is pinned the shank 32 of the bracket 33 which provides an adjustable fulcrum for the arm II in' the same way as described in connectionwith Figure l. It will be seen that the arm II with its rack I0, the bracket 33, the

sleeve 5t and the connections 4t are all capable -of movingA vertically as a unit and means are provided for electing this movement by aV stepby-step operation in order to adjust the position of the rack I'. The sleeve- 543 is provided upon each side'with ari-elongated slot 52 through which project the oppositely directed trunnions 53 which are carried by the member I5 and also the lower oppositely-directed squared studs 515. Upon the trunnions 53 are pivoted the arms ofA a yoke 55V which forms part of the operating lever 56, the handle of which is slightly offset as at 5l to avoid one ofthe tie members lill during operation.

Upon the sleeve 5Ilfthere is provided a ratchet rack 58 having the teeth 59- which are spaced apart a. distance corresponding tor the length of the separate steps by which the rack is to be raised. The yoke 55 is provided'with a pawl 6I) which is pivoted thereto as at 5i. AV stop member such as, for example, the ledge 62 is provided for preventing the pawl Ell-from moving downwardly too far. A lug 63 is provided on the pawl for manuallyl holding it in raised position during certain adjustments.

A retaining member 6511s provided having a handle 66 and the side arms 6'!" which are adaptedto embrace the standard. The arms are providedwith elongated slots 68 of a width permitting them to snuglyv receive the squared projections 54. The bight portion of the member 65- is provided with a rigid retaining pawl IIJ whichisresiliently urged into engagement with the teeth 5910i the ratchet rack 58 by means of the springs Il havingrtheir ends secured to projections l2. on the member 65` and to the ends of. the squaredlugs 5dias at 13;

The operation of this raisingmeans will be readily apparent. The retaining pawl 'lll supports the upper portion of the stand by engage'- ment with one of the teeth 59 as shown in Figure 5. The handle 55 in its raised position permits the dog or pawl Sflto engage beneath one of the teeth 59and when the handle 56 is depressed the dog will raise the upper portion of the stand to the distance of approximately the length of one of the teeth 59. During this lifting movement the member 65 will slide laterally as the inclined face of the adjacent tooth 59 forces the retaining pawl 'l'outward against the influence of the springs ll. At the end of this movement the pawl 'I0 will snap beneath the tooth 59 and the handle 56 when raised again will permit the dog 50 to-descend for engagement with the next tooth. When the rack is to be lowered the dog 6I) isrevconnectedbymeans ofthe Wires |05 with-the leased from engagement with any of the teeth59 by manipulation of the projection 62 and the re'- taining member 65 is retracted manually and the upper portion of the stand lowered tothe desired position.

The rack I0 may be rotated uponthe arm II from the vertical position indicated in Figure 1 of the drawing to a horizontal position and may be held in intervening angularA adjustments. The,

ksocketr'IS provided on the rack I0. In order to secure the rack I0 in its adjusted angular positions the end 15 of the arm II is provided with several series of sockets or holes 80, 8|, 82 and 83 which are arranged as clearly indicated in Figure 2 of the drawing. The sleeve member 11 is provided With a series of set screws 84, 85, 86 and 81 which are adapted to register successively with certain of the holes 80, 8|, 82 and 83. In the embodiment illustrated, the set screw 84 when in register with the rst hole of the series 8| will hold the rack in its horizontal position. Then a slight rotation of the sleeve 11 above the horizontal, say about six or seven degrees, will bring the set screw into register with the rst hole of the series 8|. A further rotation `through the same selected interval will bring the set'screw 86 into register with the iirst hole of the series 82. Then the set screw 81 is brought into registry with the first hole of the series 83 and after the next interval the first set screw 84 reaches the second hole of the series 80 and the set screws again are successively brought into registry with succeeding holes in the numbered series until the vertical position is reached. Of course, the intervals of adjustment may be varied by multiplying or dlminishing the numbers of the holes in the several series. A mark is provided on the sleeve or socket member 11 for indicating upon the scale 9| on the member 15 the set screw to be operated at any position of rotation of the member 11.

The set screws may be numbered I, 2, 3 and Ik and the indications on the scale correspondingly designated. Figure 3 shows the position of the described arrangement when the set screw 84 is in engagement with the rst hole of the series 80 at which point the set screw 85 shown is just approaching the rst hole of the series 8I.

The rack I0 is provided with the central longitudinal strip which is connected to the member 11 by means of the elements 18 and 19. Pivoted to the lower end of the member 95 at the spaced points 96 are the ends of the laterally extending base members or sills 91 of the rack.

Corresponding short members 98 are pivoted as tion of large sheets such as drawings, blueprints or newspapers, the sills 91 are extended laterally f as shown and the elongated jointed side arms |02 are provided which are connected by the jointed top member |03. The intermediate horizontal strip 94 is also extended and the ends |04 are outer corners |06 of theextended rack.` Additional cross wires maybe provided for further y support of large sheets and also for providing means for holding down such sheets.

In order to `retain books or magazines which may be supported on the rack in the desired open positions the leaf .holding arrangement is vprovid'- ed and will now be described. Projections I|0 are secured to theI flanges |0I of the sills 91 through which'are adapted to extend the arms of the angular rods I I The other arms of these rodsare adapted to overliethe printed matter carried by the rack and are provided at their ends with the rubber discs II2 which rest against the pages. The position of these leaf holders is adjusted and maintained by the set screws I I3. In order that the hold-down discs maybe swung out of position as for the removal of books from the rack I0 notches or openings` I I5 are provided in the anges I0| as clearly shown in Figure 1 of The same `principles embodied in the stand which has been described may be applied to a derrick or jib crane constructed in a very similar manner to the support disclosed herein.

It is understood that various changes and modifications may bemade in the embodiments illustrated and described hereinwithout departing from the scope of my invention as defined by the following claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. In a stand of the class described, in combination, a vertical standard, a substantially horizontal arm fulcrumed intermediate its length upon the upper end of said standard, at a point olset from Athe axis of said standard in the line of said arm, the supported load being carried on the end of said standard which extends in the direction opposite the said offset, a tie member connecting the other end of said arm with said the latter. f

2. In a stand of the class described, in combination, a vertically adjustable standard, a bracket secured to the upper end of said standard having a horizontal lateral extension, a cross arm selectively fulcrumed upon said extension at one of a plurality of points of connection, said cross arm being disposed in the same vertical plane as said extension, the supported load being carried by the end of said arm extending in the direction opposite to' that of ksaid extension, an adjustable tie member having its lower end connected with said standard at a point intermediate the length of the same, and its upper end selectively attached to the other end o-f said cross arm at one of a plurality of points of connection. 1

3. In a standof the class described, in combination, a vertical standard, ra tripod'base for said standard, a bracket secured to the upper end of said standard having a horizontal lateral extension, a cross arm fulcrumed upon said exf tension, said cross arm being disposed in the same vertical `plane as said extension, one of the legs of the tripod base also lying in the said plane,

the supported load being carried by the end ofv saidarm extending inthe directonlo'pposite to that of said extension, atiezmemberhavng its lower end' connected with. said standardr at; a pointintermediate the length of the latter and its upper end attached to the other end of said cross arm.

4. In a stand of the classrdescribed, in combination, an extensibleA vertical, standard; comprising an internally threaded member and an externally threaded member, onereceived withinthe other whereby the vertical height of the standard may be adjusted by relative rotation of said. members, a` cross arm extending trans.-

versely, of# said` standard at thetop thereof, a bracket projecting laterally from said upper member and provided with a fulcrum for said cross arm oiTset with respect to the axis of` said standard, a tie member connecting a projecting end of the crossfarm with an intermediate point on thefstandarcLa plurality of legsconstituting a base for said standard and extending radially from the lower onevof said members, and means for locking one of said members to the other only in rotated positions` wherein said Cross arm is above. one Y of said legs.

- WILLIAM P. LAMAR.

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