US1623047A - Adjustable frame for poster boards - Google Patents

Description

A ril 5 1927. p L. D. COOK ADJUSTABLE FRAME FOR POSTER BOARDS Filed Nov. 10. 1924 -2 Sheets-Sheet 1 vul ar April 5 1927.

L. D. COOK ADJUSTABLE FRAME FOR POSTER BOARDS Filed Nov. 10, 1924 2 Sheets-Sheet 2 Patented Apr. 5, 1927.

' UNITED STATES- L. D. cooK, OF MINNEAPOLIS, MINNESOTA.

ADJUSTABLE FRAME FOR POSTER BOARDS.

Application filed November 10, 1924. Serial No. 748,989.

My invention relates to supporting frames for poster boards and the like, and has for its object to provide such a frame that is adjustable whereby it may be very easily set up on uneven ground or on a roof having a pitch, and adjusted to proper form without cutting or fitting any of the parts thereof and without the use of bolts or similar fastening devices. Said frame may also, after having been set up, be taken down and again set up in a different place without damaging or mutilating any of the parts thereof. The invention further provides such a frame that is very light, durable, strong and so braced as to withstand all wind strain.

To the above end, generally stated, the invention consists of the novel construction and arrangement of parts hereinafter described and defined in the claim.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings:

Fig. 1 is a front elevation of the adjustable frame supporting a sectional poster board;

Fig. 2 is a transverse vertical section taken on the line 22 of Fig. 1;

Fig. 3 is a detail View with some parts sectioned on the line 33 of Fig. 2, on an enlarged scale;

Fig. 1 is a detail view with some parts sectioned on the line 441 of Fig. 2, on an enlarged scale;

Fig. 5 is a detail view with some parts sectioned on the line 5-5 of Fig. 2,0n an enlarged scale;

Fig. 6 is a detail view with some parts sectioned on the line 6-6 of Fig. 2, on an enlarged scale;

Fig. 7 is a perspective view of one of the anchor posts; and

Fig. 8 is a detail view principally in section showing one of the anchors for securing the uprights of the frame to aroof. 7

The adjustable frame includes uprights 9, braces 10, and struts 11, each of which comprises upper and lower tubular members, the former of which are telescoped into the latter. The members of each upright 9 are frictionally secured in different longitudinal adjustments by a clamp 12 in the form of a collar having tapered screw-threaded engagement with the upper end of the lower member of said upright, which is longitudilongitudinaladjustments by clamps 14 and 15, respectively, similar to the clamp 12.

Each upright 9 and each brace 10 is securedto an individual anchor 16 which, as shown, is in the form of a cement post having an extended base 17 and a pair of laterally pro jecting lugs 18 near its top. The anchors 16 are embedded substantially their full depth in the ground and their bases 17 and lugs 19 securely *hold the same in position.

Each anchor 16 has a metal reinforcement 19 which, as shown, is in the form of a pipe that extends axially therethrough and thereabove, and has a pair of downwardly'di verging arms 20 that extend into the lugs 18. The anchors 16 are arranged in front and rear rows and the lower members of the uprights 19 are hingedly connected to the front row of said anchors and the lower members of the braces 10 are hingedly connected to the rear rows of said anchors. The hinge connection between each upright 9 and its anchor 16 and between. each brace lO'and its anchor 16 is identical the one to the other.

The hinge connection for one of the braces 10 is shown in Fig. 6, and comprises apair of plugs 21 telescoped the one in the rein forcement 19 in the respective anchor 16* and the other in the lowerend of the respective brace 10 and rigidly secured thereto. Formed with these plugs 21 is a pair of overlapping hinge lugs 22 connected by a hinge bolt 23 and a hub 24 on the lower hinge lug 22 which extends into a seat 25 in the upper hinge lug 22.

The braces 10 for the upright 9 are located directly back of the same, inclined toward said uprights, and hingedly connected to their upper members near their upper ends by nut-equipped hinge bolts 26 whichete tend through outturned ears on clamping collars 27 and bores in the upper end of said braces which are flattened and extended between said ears. The clamping collars 27' encircle the upper member of the respective uprights 9 and are frictionally clamped thereon.

The lower members of the struts 11 are bolts 28 and clamping collars 29 and the upper members of said struts are hingedly connected to the upper'members of the braces 10 by nut-equipped hinge bolts 30 and clamping collars 31. The ends of the struts 11 are flattened and extended between the ears of the clamping collars 29 and 31 and said collars are frictionally clamped onto the uprights 9 and braces 10.

hen the above described adjustable frame is mounted on a roof, the uprights 9 and braces 10 are secured by anchors 32 having laterally projecting feet 33 secured to a roof 34 by lag screws 35, as shown in Fig. 8. The anchor 32 is identical with the lower hinge member 22.

It may be here stated that the clamping collars 12, 14 and 15 permit the members to which they are applied to be adjusted to a fraction of an inch and then securely connected. The clamping collars 2'7, 29 and 31 may also be secured to the members to which they are applied at any desired longitudinally spaced point and turned so that connected members may be properly aligned. Obviously, the hinge connections between the uprights 9 and their anchors 1G permit said uprights to be aligned by moving the same either forward or backward, and the hinge connections between these braces 10 and their anchors 1G permit said braces to be set in different oblique positions. Furthermore, the hinge connections for the braces 10 permit the rear anchors 16 to be set where convenient at different distances from the front row of anchors 16.

The telescopical connection between the members of the uprights 9 permits said uprights to be readily longitudinally adjusted to the same height when their anchors 16 are set at different elevations in uneven ground, as shown in Fig. 1, or when the adjustable frame is mounted on a roof having a pitch. The braces 10 and struts 11 for the uprights may be readily longitudinally adjusted to proper posit-ions and hold the uprights 9 irrespective of the contour of the ground or the pitch of a roof.

All of the uprights 9 are connected by Vertically spaced upper, lower and intermediate cross tie bars 36 which may be of wood or steel. These cross tie bars 36 are secured to the uprights 9 by U-bolts 37 on which are Washers 38 interposed between the uprights 9 and the backs of said cross tie bars. The nuts on the U-bolts 37 are countersunk in the faces of the cross tie bars 36 so that said bolts or nuts do not project outward thereof.

A sectional poster board 39 is secured to the cross tie bars 36, and each section thereof extends from the lower cross tie bar to the top cross tie bar. The sections of the poster board 39 are secured to all of the cross tie bars 36 by nails of other fastening devices. As shown, each section of the poster board 39 comprises a steel body member 40 nailed or otherwise rigidly secured to a wooden frame 41 on the back thereof. This frame l1 may be made of steel, if desired, and in some instances it might be desirable to secure the steel plate 40 directly to the cross tie bars 36. While the poster board illustrated is made in sections, the same may be entirely made of wood secured to the cross tie bars.

From the above description it is evident that after the anchors 16 are in position and the uprights 9 and braces 10 are secured thereto, said uprights and braces, together with the struts 11, may be readily adjusted to properly position the adjustable frame without cutting or fitting any of the parts thereof or without the use of bolts or similar fastening devices. This adjustment may take place irrespective of the elevation at which the anchors are located and the distance at which the rear row of anchors is located back of the front row thereof. It is, of course, understood that where the c011- tour of the ground is very irregular, the upper members of the uprights 9 and braces 10 will have to be in different lengths.

The above described adjustable frame, when once set up, may be taken down with out damaging or mutilating the same and again set up at a different location by simply readjusting the several parts thereof.

hat I claim is:

An adjustable frame for a poster board including a plurality of uprights and braces, struts connecting the uprights and braces and secured thereto for vertical adjustment, each upright, brace and strut comprising telescopically connected members, clamps connecting the members of each upright, brace and strut in different longitudinal adjustment, and anchors to which the lower members of the uprights and braces are hingedly secured for forward or backward tilting movement.

In testimony whereof I aflix my signature L. D. COOK.

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