US2455408A - Portable projector table - Google Patents

Description

Dec. 7, 1948. DANlELs 2,455,408

PORTABLE PROJECTOR TABLE Filed Dec. 12, 1945 2 Sheets-Sheet 1 I ureutor Dec. 7, 1948. l H. L. DANIELS 2,455,408

PORTABLE PROJECTOR TABLE Filed Dec. 12, 1945 Y 2 Sheets-Sheet 2 2 v Inventor film/ Y Z. DANIELS wg wm Patented Dec. 7, 1948 UNITED STATES' PATENT OFFICE PORTABLE PROJECTOR TABLE Henry L. Daniels, Kell, Ill.

Application December 12, 1945, Serial No. 534,567

2 Claims.

This invention relates to a portable table and has for its primary object to support motion picture projectors, stereopticons and the like.

Another object is to facilitate the transportation of the table and yet permit it to readily be set up for use.

A still further object is to insure the supporting of the projector or stereopticon level so as to avoid distortion of the pictures being projected.

Among its features my invention embodies a stand comprising a center post having arms radiating therefrom and legs at the ends of the arms, the arms being arranged to be folded against the center post in parallel relation therewith so as to move the legs toward the center post and permit them to lie in parallel relation thereto for transportation purposes, a top member forming the table top and lugs pivoted to the underside of the top member which are adapted to be projected downwardly therefrom and enter the upper ends of the legs in telescopic engagement therewith rigidly to support the table top in position on the legs.

Other features include levelling sleeves threadedly connected to the upper ends of the legs by adjustment of which the table top may be brought into a level condition.

In the drawings:

Figure l is a perspective view of a table embodying the features of this invention,

Figure 2 is an inverted perspective view of the table top,

Figure 3 is a fragmentary enlarged sectional view taken substantially on the line 3-3 of Figure Figure 4 is a view similar to Figure 3 taken substantially on the line l I of Figure 1, and

Figure 5 is an enlarged fragmentary view of the center post and the sleeves, showing portions in section to more clearly illustrate the details of construction.

Referring to the drawings in detail my improved table comprises a stand designated generally Ii] which is formed of a center post II having riveted welded or otherwise permanently secured near its upper end a plurality of yokes 82 each of which is provided with a pivot pin I3 to support radiating arms I4, the outer ends of which have pivoted thereto as at I5 yoke members it which are fixed to legs H in any suitable manner.

The legs ll have attached near their lower ends yokes I8 similar in construction to the yokes I6 and pivoted as at H] to the yokes l8 are inwardly extending radial arms 20 the inner ends of which are pivoted as at 2| to yokes 22 which in turn are rigidly mounted to a sleeve 23 which is slidably mounted on the post I! near its lower end. Formed in the post II near its lower end are diametrically opposed rows of vertically spaced openings 24 for the reception of the shank of a stop pin 25 which serves to limit the upward movement of the sleeve 23 with relation to the center post I I when the stand is in extended position. Formed adjacent the upper end of each leg I! are screw threads 26 and threaded thereon are sockets 27 which serve as the leveling means for the table top to be more fully hereinafter described.

The table top above referred to comprises a top member 28 to which attaching brackets 29 are secured in any suitable manner as by bolts 30. The attaching members 29 are provided with barrels 3| for the reception of rotating shafts 32 each of which carries at one end an angularly extending stud 33 which when the shafts are rotated are adapted to enter the sockets 21 previously referred to to support the table top in place on the stand I0. Surrounding the end of each shaft 32 opposite that carrying the stud 33 is a compression coil spring 34 one end of which abuts the end of the barrel 3! While the opposite end abuts a suitable cross-pin 35 which extends through the shaft 32 adjacent the end opposite carrying the stud 33.

In use the stand II) is extended as illustrated in Figure 1 with the sleeve 23 moved downwardly on the center post I I and held in such position by means of the pin 25 extending through aligned openings 24. The studs 33 are turned downwardly and are entered into the sleeves 21! which may be adjusted on the screw threads 26 to level the table and compensate for any irregularities in the floor on which the stand 18 may rest. The projection machine or stereopticon may then be mounted on the upper surface of the table top and the projection of the pictures may proceed in the ordinary manner. When it is desired to transport the table, the top 28 is removed by extracting the studs 33 from their telescopic engagement with the sockets 27 and the studs 33 are then folded down into the position illustrated in Figure 2 so that they will lie fiat against the underside of the table top and the top is ready for transportation and will occupy a minimum amount of space. Having removed the table top from the stand I0 the pin 25 is extracted from the openings 24 thus allowing the sleeve 23 to move upwardly on the post I l and permitting the arms I4 and 20 to move about their respective pivots into a position substantially parallel with the post H which will simultaneously move the legs I! inwardly so that they will lie parallel with the post I l in a compact bundle ready for transportation.

From the foregoing it will be evident that a conveniently transportable table is provided which may readily be set up for operation and with equal facility folded into compact form.

While in the foregoing there has been shown and described the preferred embodiment of this invention it is to be understood that minor changes in the details of construction, combination, and arrangement of parts may be resorted to without departing from the spirit and'scope of the invention as claimed.

What I claim is:

1. A folding table comprising a table top,.a

slide longitudinally thereof below the convergent ends of the arms, a second group of convergent arms pivoted at their convergent ends to the sleeve and at their divergent ends to the legs, said second group of arms being movable through arcs which lie in convergent planes coincident with thearcs in which the first group of arms move and spaced studs pivoted to the underside of the table top to swing in arcs which lie tangent to the center post, said studs being received in the sockets when the table is erected.

2, A folding table comprising a table-top,- a

.4 group of legs having adjustable sockets at their upper ends, a group of arms pivoted to the legs, said arms lying along axes which lie in convergent planes, 2. center post pivoted adjacent its upper end to the convergent ends of the arms, said post having a longitudinal row of longitudinally spaced openings extending therethrough, a sleeve mounted on the center post to slide longitudinally thereof below the convergent ends ofthe arms, a second group of convergent arms pivoted at their convergent ends to the sleeve and at their divergent ends to the legs, said second group of arms being movable through arcs which lie in convergent planes coincident with the arcs in which the first group of arms move, a cross pin extending through one of the openings in said row to limit the approach of the sleeve toward the table top and spaced studs pivoted to the underside of the table top to swing in arcs which lie tangent to the center post, said studs being received in the sockets when the table is erected.

HENRY L. DANIELS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,166,700 McDaniel Jan. 4, 1916 FOREIGN PATENTS Number Country Date 220,681 Germany Apr. 5, 1910 358,638 Germany Nov. 18, 1921

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