US474186A - Ezra pleukharp - Google Patents

Description

(Nb Model.)

E. PLEUKHARP.

SLIDE EOE EXTENSION TABLES.

No. 474,186. Patented May 3, 1892.

nu n U l I Nu t?, n.. my; :i l 1 I im I i IIFI" EZRA `PLEUKHARP, OF ROOKFORD,

PATENT OFFICE.

ILLINOIS, ASSIGNOR TO JOSHUA E.

LAHMAN AND EDGAR R. LAIIMAN, OF SAME PLACE.

SLIDE FOR EXTENSION-TABLES.

SPECIFICATION forming part of lLetters Patent No. 474,186, dated May 3, 1892.

Application filed September 9, 1891. Serial No. 405,191. (No model.)

.To all whom it may concern;

Be it known that I, EzRA PLEUKHAEP, a citizen of the United States, residing at Rockford, in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Slides for Extension-Tables; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same.

My present invention relates to improvements in slides for extension-tables; and the object of the invention is to provide means whereby the upper surface or edge of the sections of the slide is maintained in a truehorizontal position to obviate the objection of the slide sagging in the middle; and a further object is to insure the easy movement of the sections and prevent the same from binding when extending or folding the sections.

With these ends in View my invention consists in the combination, with the sections, each having a longitudinal T-shaped groove, of the connecting casting or iron between the adjacent sections, said casting or iron being rigidly secured at one side to one section and having its other side joined to the fixed side by transverse connecting-webs, which are arranged inthe same horizontal plane and which are fitted and operate in the reduced portions of the grooves, said webs forming bearings for the movable section of the slide and operating to keep the sections in their proper relative positions, so that sagging is avoided. The transverse webs are further provided in their upper edges with grooves or recesses to receive the upper flange on the movable section of the slide, and the movable side of the casting or iron is made thin, so that the slide `member or section can move freely without any tendency to bind, all as will be hereinafter more fully described and pointed out.

I have illustrated my improvement in the accompanying drawings, applied to and used in connection with a slide consisting of three sections and a proper number of connecting castings or irons, and in the drawings Figure I is a perspective View `of my improved slide, showing the same extended. Fig. II is an end view showing the slide folded.

Fig. III is a vertical transverse section through the sections or members and the irons in the position indicated in Fig. II. Fig. IV is a detail perspective view of the casting or iron removed from the members of the slide. Fig. V is a horizontal sectional view taken longitudinally through a portion of two members 2 3 of a table-slide, showing the castings or irons in elevation. Fig. VI is an elevation of the casting or iron, taken from the narrow side 15 thereof; Fig. VII is a horizontal sectional View similar to Fig. V, taken longitudinally through the contiguous ends of the members l 2 of the slide to show the castings or irons l0 Il, which connect said members.

Like numerals of reference denote corresponding parts in all the figures of the drawings-, referring to which- I, 2, and 3 designate the sections or members of my improved table-slide. The middle member or section 2 of the slide is pro` vided in its vertical faces with the T-shaped grooves 4 4r', one on each side, while the outer members l 3 are each provided with a single groove 5 6, respectively, the grooves being on the inner faces of the member and arranged to align or coincide with the grooves on the faces of the middle section or member, as indicated veryclearly in Figs. II and. III.

The member l of the slide is connected at one end to the middle member 2 by means of a casting or iron lO, which is xed or secured in groove 5 of the member l and Works or slides freely in the groove/l of the member 2,

while the other end of the members l 2 are connected by means of a similar casting Il, which is ixed in the groove 4 of the member 2 and slides freely in the groove 5 of the member l. The other outside member 3 and the middle member 2 are similarly connected together by means of the irons or castings l2 13, the former casting 12 being secured in the groove 6 of the member 3 and working freely in the groove il of the middle member 2 at one end and the other casting 13 being secured in the groove t of the member 2 and working freely in thegroove 6 of the outside member 3. The castingsfare similar in construction and secured to the members or sections of the slide in a similar manner, and I will now proceed to describe in detail the casting, its method of securement, and its operation.

The casting consists of the vertical plates 15 16 and the horizontal transverse webs 17 18, all of which are cast or formed of a single piece of metal. The two vertical plates are arranged parallel with each other, and they are joined at the ends by the transverse integral webs. The two webs are arranged in the same horizontal plane-that is to say, the upper edges of the webs are in the same plane and the lower edges of the webs are likewise aligned; but the vertical plates are not aligned throughout their length.

The Vertical plate 15 is narrower in width than its fellow plate 1G, and said plate 15 is provided at one end with a depending flange 20 and at its other end with an upward-eX- tending fiange 2l, said flanges 2O 21 fitting in the groove in one member of the slide and serving to hold one part or side of the casting in the proper slide member. The 'other plate 16 has a flange 22 on its upper side coincident with the ange 21, and the wide plate 16 is further formed with a fullness at 23 on its lower side below the webs, which lug 23 is of equal length to the lug 20 on the opposite side of the casting, the lug 23 thereby making the plate 16 somewhat wider than the plate 15, whereby the plate 16 serves in a great measure to uphold the sectionsor prevent them from sagging. The plate 16 being wider than the plate 15, it extends below the lower edge'of the plate 15, as shown in Fig. 1V, and said lower edge of the plate 16 is beveled or rounded off at 24E at one end beyond the lug 20, and in the center of the wide plate 16 below the plane of the lower 'edge of the plate 15 is formed a transverse notch 25, which is adapted to receive the fastening pin or dowel 26, which is drivenfthrough the slide and into the notch in the plate 16 of the casting.

The casting is designed to be rigidly secured at one side to one section or member of the slide and its other side is designed to move freely in the other fellow section of the slide. To accomplish these ends in a satisfactory and efficient manner, I make the side of the casting which is to be secured to one section quite thick, so as to completely fill the groove therein, while the moving side of the casting is made thinner to enable it to ride freely in the groove of the moving or other section. rllhus the plate 16 is made somewhat thicker than the plate 15, and the former plate is fitted tightly in the groove of one section, so as to completely fill the same, while the plate 15 fits somewhat easily in the other groove of the proper section to enable it to have easy movement.

The transverse webs 17 18 are made of such width adjacent to the thick plate 16 as to completely fill the narrow part of the groove in the section or member to which the casting is secured, while a groove or recess 27 is cut in the upper edge of each web to receive the upper [iange formed by the groove in the other section or member of the slide, such grooves 27 27 in the webs being in horizontal alignment and serving to permit a limited play, which insures easy movement of the ange on the moving section of the slide, thus obviating binding between the flanges and the casting.

In fitting my improved slide I thrust the thick side or plate 16 of the casting in the groove at one end of one section and secure the casting in place by the dowel-pin, after which the thin side or plate 15 is fitted in the groove in the adjacent section or member, with the upper iiange fitting the aligned recesses 27. The transverse webs of the casting ride on the flanges formed by the grooves in the sections or members of the slide, and said webs serve as bearings to prevent the sections or members from sagging when they areextended, whereby the slide is prevented from sinking or being depressed at the middle under the load or weight imposed on the table. p

The operation and advantages of my invention will be readily understood and appreciated by those skilled in the art from the foregoing description, taken in connection with the drawings.

Although I have described and shown only three sections or members as an embodiment of lmy invention, yet I would have it understood that I do not confine myself to any particular number, and if the number is increased the middle or intermediate sections should be grooved on both sides in the manner similar to the section 2 of the slide herein shown; nor do I limit myself to the exact form and proportion of parts herein shown and described, nor to the details of construction, as .Iam aware that modiicationscan be made therein without departing from the spirit of my invention.

Having thusdescribed my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with the slides having on theiwil opposing faces the coincident T- grooves of uniform width, of the metallic connection or casting having its longitudinal side plates 15 16 tting in the enlarged parts of the grooves in said slides, said casting provided with the integral transverse webs 17 18, having the aligned notches 27 intheir upper edges, the lower edges of. both webs bearing on the edges of the grooved slides, and the notches 27 in said webs affording a loose bear- IOO IIO

provided with the aligned grooves 27 in their ro upper edges, as set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

EZRA PLEUKHARP.

IVitnesses: 1

EMMA L. SCHILLE, ANNA K. WILLIAMS.

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