US510941A - Revolving adjustable map-stand - Google Patents

Description

(No Model.)

L. U. SNEAD.

REVOL ING ADJUSTABLE MAP STAND. No. 510,941. 1 Patented Dec. 19, 1893.

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from its simplicity of construction and ease UNITED STATES PAT NT LITTLETON UPSHUR 'SNEAD, OF ELLISBURG, PENNSYLVANIA.

REVOLVING ADJUSTABLE MAP-STAN D.

SPECIFICATION forming part of Letters Patent No. 510,941, dated December 19, 1893.

Application filed April 21, 1893.

To (LZZ whom it natty concern.-

Be it known that I, LITTLETON UPSHUR SNEAD, a citizen of the United States, residing at Ellisburg, in the county of Potter and State of Pennsylvania, have invented certain new and useful Improvements in Revolving Adjustable Stands for Exhibiting Maps, Charts, &c.; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawing, and to the figures of reference marked thereon, which forms a part of this specification.

The object of my invention is to provide a revolving stand or support for maps, charts, portable black boards or similar objects, which of operation, will greatly facilitate the examination or exhibition of maps, charts or drawings, and which by reason of its neatness and compactness will be ornamental as well as useful and require but little room.

The stand is composed of parts as hereinafter shown and described in the drawing, and adjustable to suit the various sizes of maps or charts in use in Sunday schools, Young Mens Christian Associations, &c., by lecturers or educational institutions, and is capable of holding two maps back to back and may be raised and lowered-or caused to revolve with perfect ease.

The invention consists of two or more metal tubes, with two or more metal rods passing through and adapted to rotate within the same, thumb screws for holding said rods in said tubing at any position desired and pinspassing entirely through said tubes so as to form a bearing for rods inside when rotating, the lower tube being mounted on any ordinary tripod or four legged stand, the upper rod being provided at the topwith a socket to receive a piece having arms projecting laterally on which arms one or more maps or charts may be hung.

The drawing represents the adjustable revolving stand put together and in position to have maps hung thereon.

In the drawing -21=- is the lower tube mounted on the tripod,

Serial no; 471,269. on modeld 13 is the upper tube and 14 is the lower movable metal rod which may be placed in any desired position inside of the tubes 21 and 13 and held by means of the screws 20, 16 and 18 and pin 22.

5 is'the upper adjustable metal rod which passes through the upper tube 13. It may be raised and lowered at pleasure and held in any position desired by the screws '7 and 9 or may be left to revolve in the tube 18, the bottom of the rod resting when fully extended on r the key pin 11, which passes entirely through the tube as shown, forming a bearing. In like manner the central adjustable metal rod 14 may either be held by screws 16 and 18 in bottom of tube 13 and left free to revolve in tube 21 the bottom of rod 11 resting on the pin 22 which passes entirely through the tube 21 as shown, or the rod 14 and tubes 13 and 21 may be held rigidly together and prevented from revolving by means of the thumb screws 16 and 18 in tube 13, and screw 20 on top of tube '21, so that only the rod 5 and arms 1 and 1 secured in the socket 3 by the screw 1 on top of rod 5, will revolve in tube 13, the pin 11 forming the bearing for the bottom of rod 5, and the screws 7 and 9 being loosened to permit the rod 5 to revolve.

The tube 13 is provided with a number of collars as shown in the drawing by the numerals, 6, 8, and 17 and the tube 21 is also provided with the collars 19, 23 and 24. The collar 24 shown in the drawing is a sliding collar which is held rigidly at any desired point at the lower end of the tube 21 by means of the thumb screw 25.

The tripod as shown in the drawing I do not claim as myinvention and is used merely for the purpose of illustration in the drawing, as any ordinary tripod or four legged stand secured in a suitable manner to the tube 21 will answer the purpose. The key pin llpasses entirely through the tube 13 and the collar surrounding it as shown in the drawing, and serves as a support and bearing for the rod 5 when'it is desired to have the rod 5 revolve or turn in the tube 13. When the rode is revolving the rod 1 1 passing partly into the tube 13 and partly into the tube 21 serves to connect the tubes 13 and 21 and the thumb screws 16, 18 and being tightened prevents the tube 13 or rod 14from' rotating and holds the rod 14, tube 13 and tube 21 rigidly together. If the map shuld be too high when rod is extended upwardly to the height shown in the drawing the key pin 11 may be removed and the rod 5 lowered-until the lower end thereof rests upon the upper end of the rod 14 upon which it may revolve.

In the drawing the rod 14 is shown as resting upon the key pin 22 which passes entirely through the tube 21 and the collar 23 which surrounds it; but the rod 14 may be lowered in the tube 21 by withdrawing the key pin 22 and may be secured at any other position desired by means of the thumb screw in the tube 21 and the thumb screw 18 in the lower end of the tube 13. On the other hand if desired the rod 5 may be securely held in the tube 13 by means of the thumb screws in said tube 13 and the tube 13 may be allowed to revolve around the rod 14, the thumb screws 16 and 18 being loosened to permit the-rotation; or still again, the thumb screws 16 and 18 may be tightened holding the rod 14 rigidly in tube 13, the thumb screw 20 being loosened and the key pin 22 being passed through the collar 23 and tube 21. The rod 14 may then rest on the key pin 22 and revolve in the tube 21; or if desired the rod 14 may be held rigidly in the tube 21 and the thumb screws 16 and 18 in tube 13 maybe loosened so that the tube 13 resting on the topof the tube 21 may revolve around the upper portion of the rod 14.

The arms 11 are slightly turned up on their outer ends forming a hook upon which maps, charts, portable blackboards or other objects may be hung. When only two arms are used two such maps may be hung back to back and may be revolved with perfect ease if circumstances requireit orit' it is desired so to do by the lecturer or professor. If more than two arms are used a number of maps of equal size may be exhibited and revolved,in some cases a map requiring but one arm and in other cases two arms to support it. The piece or stem 2 to which the arms are connected besides having the lower end formed to-fit loosely into the socket 3 on top of the rod 5 and in which it may be secured by the thumb screw 4, also projects slightly above said arms forming a knob or hook on which a map, chart or black board may be hung if desired.

Having described my invention, what I claim asnew, and desire to secure by Letters Patent, is-

1. As a new article of manufacture, a revolving, adjustable stand for maps, charts, and blackboards, consisting of the tubes 13 and 21, the rod 14 passing partly into said tube 13 and partly into said tube 21,the thumb screws 16 and 18 and 20, and the key pin 22, collars 19 and 23 on tube 21, a rod 5 adapted to fit snugly into tube 13 and to be moved vertically in said tube, thumb screws 7 and 9 to hold said rod 5 rigidly when desired, key pin 11 passing entirely through said'tube 13 serving as a bearing and support on which said rod 5 may revolve, said rod provided at its upper end with a socket 3 and thumb screw 4, arms 1 secured to central piece or stem 2 which projects slightly above said arms and below said arms is formed so as to fit into the socket 3 on top of rod 5 where it may be secured by the thumb screw 4, the key pin 22 passing entirely through the tube 21 forming when desired a bearing for the rod14 and on which the rod 14 may revolve, allsubstantially as shown and described, and for the purpose set forth.

2. The combination of the arms 1, rod 5 provided with the socket 3 and thumb screw 4, the tube 13 adapted to receive the rod 5 with the tube 21 and rod 14, said tubes provided with the collars 6, S, 15, 17 and 23 and the thumb screws 7, 9, 16, 18,20 and 25, key pin 11 forming a bearing for rotating rod 5, and key pin 22 adapted to form a bearing for the rod 14, substantially as shown and described and for the purpose set forth.

3. The combination of the arms 1, the piec or stem 2 to which the arms are connected, the socket 3 on top of the rod 5 tubes 13 and 21, rods 5 and 14, fitting loosely in said tubes and adapted to revolve therein, thumb screws adapted to hold said rods in position in said tubes, key pins adapted to pass entirely through said tubes at points desired, said rod 5, or tube 13, or rod 14 to revolve as desired and any suitable stand whereon the whole may be mounted, substantially as shown and described and for the purposes specified.

In testimony whereof I atfix my signature in presence of two witnesses.

LITTLETON UPSHUR SNEAD. \Vitnesses:

J NO. LUDERY, ANNIE L. DAVIS.

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