US620789A - Extension-table - Google Patents

Description

No. 620,789. Patented Mar. 7, I899. A. G. MAHAFFY &. G. W. NIGH.

EXTENSION TABLE.

(Application filed May 21, 1898.

2 Sheets-Sheet i.

(No Model.)

Wi'inesses @zih No. 620,789. Patented Mar. 7, I899. A. C. MAHAFFY & G. W. NIGH.

EXTENSION TABLE.

plication filed May 21, 1898.)

2 Sheets$heet 2.

(No Model.)

Elma Q r N x. a $N $WN Q Q Qu l1| i Q%\\ I A m m. WWW I., Q \m. \w I Q Wizheuedx NlTED STATES PATENT OFFICE.

ALEXANDER C. MAHAFFY AND GEORGE W. NIGH, OF SEWARD, NEBRASKA.

EXTENSION-TABLE.

SPECIFICATION forming part of Letters Patent No. 620,789, dated March '7, 1899.

Application filed May 21, 1898. Serial No. 681,302. (No model.)

To all whom it may concern.-

Be it known that we, ALEXANDER 0. MA- HAFFY and GEORGE WV. NIGH, of Seward, Sew ard county, Nebraska, have invented certain new and useful Improvements in Extension- Tables, of which the following is a specification.

Our invention relates to extension-tables; and it consists in certain novel and peculiar features of construction and combinations of parts, as will be hereinafter described and claimed.

The object of the invention is to produce an extension-table of simple, strong, durable, and comparatively inexpensive construction which may be manipulated easily and quickly, and in order that the invention may be fully understood we will proceed to describe it with reference to the accompanying drawings, in which- Figure 1 represents an end view of the table in its closed or normal position. Fig. 2 represents a vertical section of the same. Fig. 3 represents a section taken on the line III III of Fig. 1. Fig. represents a section taken on the line IV IV of Fig. 1. Fig. 5 represents an end view of the table in its extended position. Fig. 6 is a view, partly in plan and partly in horizontal section, of a portion of the table.

The table comprises, essentially, two sections or members. One of these is provided with two corner or outerlegs 1 and two inner legs 2, and said legs 1 and 2 are respectively connected by the londitudinal sills 3 and 4, transverse sills 5 being utilized to unite the legs 1 and 2 in pairs, so as to constitute the frame of the table-section. The transverse sills 5 nearer the legs 1 are cut away in their upper sides to provide the notches 6 for a purpose which will hereinafter appear, and the shoulders formed by notching said sills, as described, are preferably rounded and bifurcated, as shown at 7, and journaled upon pins bridging said bifurcations are the antifriction rollers 8, said rollers projecting slightly beyond said shoulders (see Figs. 4 and 6) for a purpose which will be hereinafter explained. Said sills at their inner sides are also provided with horizontal grooves 9, extending from the inner longitudinal sill 4 outwardly. (See dotted lines, Fig. 2, and full lines, Fig. 6.)

1O designates horizontal bars secured externally to the sills 5 and provided with notches 11, registering with the notches 0r cut-away portions 6 of the sills. Said bars 10, however, at their inner sides and upper edges are provided with longitudinal grooves 12 and have their upper edges occupying a lower plane than the corresponding edges of the sills for a purpose which will hereinafter appear. The frame thus described is provided with a narrow horizontal top 13, which overlaps the notches 6 some distance, and midway of their length the horizontal sills 3 and 4. are provided with depending guideplates or clips 13, and outward of said guideplates or clips said sills are connected by the horizontal cross-bars 14:-

15 and 16 designate a pair of parallel longitudinally-extending plates secured to the cross-bars 14 and designed as a support and guide for a part to be hereinafter described, and the plate 16 carries centrally an inverted- U-shaped bracket 17, said bracket being of suitable metal and secured, preferably, to the plate 16 by means of screws 18.

19 designates a shaft which is journaled at one end in the bracket 17 and near its opposite end in one of the end sills 5, and secured upon the projecting end of the shaft is a corrugated or toothed wheel 20, engaged by a gravity-dog 21, for the purpose of securing the table-sections at the desired point of adjustment by preventing the rotation of the shaft, and consequently of the cog-wheel 22, mounted upon said shaft within the bracket 17.

Referring now to the companion section of the table, 23 designates the legs, which are arranged rectangularly with reference to the other corner legs 1, and 2 1 designates a longitudinal sill connecting said legs and provided with a pair of parallel inwardly-projecting arms 25, which extend through openings 4 in the sill 4 of the first-named tablesection and fit snugly against the inner sides of the transverse sills 5, (see Figs. 4 and 6,) said arms being provided with guide and stop pins 26, which project into the grooves 9. The pin by striking the opposite ends of said grooves limits the inward and outward relative movement of the table-sections, as will be readily understood. The companion table-section is provided with a horizontal top board 27, occupying the same plane as the table-top 13 of the first-named section. Both sections 13 and 27 of the table-top project, as usual, beyond the outer sides of the sills. Consequently a space 28 is formed between the projecting section 27 and the bars 10, and said space communicates or opens into the grooves 12, hereinbefore referred to. 29 designates slide-bars or supports which fit snugly in said space and are provided with depending tongues 30, which engage the grooves 12. (See Fi 4.) These tongues obviously prevent the lateral displacement of the slide-bars, while the bars 10 and tabletop 27 prevent the vertical dislocation of said bars. They are provided with wood-screws 31 or equivalent devices for engagement with the end sills 5 to secure them at the desired point of adjustment.

Hinged to the inner edge of the table-top section 27, as at 32, is a folding table-top section, consisting of a plurality of'superposed strips 33, the upper one occupying the horizontal plane of the section 27 and bearing against the inner or opposing edges of the same when the table is in its folded or closed position. Vhile in such position it is supported horizontally by the remaining sections, which occupy the cutaway or notched portions of the end sills 5 and rest upon the same. The sections are hinged to each other, as shown at 34, so that they may be unfolded to the position shown in Fig. 5 when the table is extended, and are supported in such position by the sliding supports 29, which are moved to the position shown in Fig. 5. Of course a greater or less number of these strips may be employed.

Depending from the sill 24: is a plate 35,to which is secured a rack-bar 36, engaging the cog-wheel 22 and guided in the clips 13 and guide- plates 15 and 16, in order that it may be held reliably in engagement with said cogwheel. This connection between the cogwheel and the rack-bar when the wheel 20 is locked by the dog 21 prevents the table from being extended or contracted, as will be readily understood.

Supposing the table is in its closed or folded position, as shown in Fig. 1, the operator throws the dog or pawl 31 out of engagement with the wheel 20 and then grasping the table-sections'pulls them relatively apart until the guide and stop pins 26 limit such movement. The hinged strips 33 are then unfolded to the position shown in Fig. 5 and the sliding supports 29 advanced to the position shown in the same figure to support said strips. lVhen adjusted as desired, the dog or pawl 21 is rengaged with the wheel 20 in order to prevent accidental movement of the table-sections. To close the table, the dog or pawl is thrown out of engagement with said wheel and the table-sections moved toward each other, and when they have assumed the requisite position the dog or pawl is reen gaged with the wheel.

Owing to the fact that the top of the tablesection 27 rests upon the antifriction-roller 8 it is obvious that the table may be extended or contracted easily and the manipulation thereby facilitated.

From the above description it will be ap= parent that we have produced an extensiontable which is easily operated and which embodies the features of advantage enumerated in the statement of invention. It is also obvious that the number of strips in the hinged section of the table-top may vary as desired and that various other changes in the detail construction or arrangement of the parts may be resorted to without departing from the spirit and scope or sacrificing any of the advantages of the invention.

Having thus described the invention, what we claim as new, and desire to secure by Letters Patent, is-

An extension-table, embodying longitudinal sills, transverse end sills provided with notches, supporting-legs, and a top board overhanging said notches, a second section consisting of a longitudinal sill, supporting legs, parallel arms projecting from said sill through the adjacent sill of the first-named section, and at the inner sides of the end sills of the same, and a top board mounted upon said sill and arms and overlapping the end sills of the first-named section, in combina* tion with a folding section of the table-top, the same being hinged to the top board of one of the first-named sections, and consisting of strips hinged together so that they may occupy superposed positions in the notches of said sills, or may occupy a horizontal position in the same plane as the other table-top sections, bars secured externally to the sides of the end sills and provided with grooves, and adjustable slide bars resting upon said grooved bars and below the top of one of the sliding table-sections, and provided with tongues engaging the grooves of said bars, substantially as and for the purpose described.

In testimony whereof we affix our signatures in the presence of two witnesses.

ALEXANDER O. MAHAFFY. GEORGE XV. NIGI-I.

lVitnesses:

G. H. TERWI LIGER, M. P. HEcoX.

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