US662446A - Extension-table. - Google Patents

Description

N0. 662,446. Patented Nov. 27, |900. J. T. LA TURNU. EXTENSION TABLE. (Appumin med Fab. 27, 1900.) (No Modal.) 2 Sheets-Sheet l.

Patented Nov. 27, |900. J. T. LA TURNO. j EXTENSION TABLE. 4 (A'ppiimiou med Feb. 2:7, 190m 2 Shets--Sheei` 2.

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EXTENSION-TABLEl SPECIFICATION fermi-.ng part of Letters Patent No. 662,446, dated November 2v, 1900.

Application led February 27, 1900. cerial No. 6,719. @10 mOCelJ To @ZZ whom t may concern.'

Be it known that LJOHN THOMAS LATURNo, a citizen of the United States, and a resident of Commerce, in the county of Scott and State of Missouri, have invented a new and Improved Extension-Table, of which the following is a full, clear, and exact description.

The invention relates to extension -tables such as shown and described in Letters Patent of the United States No. 625,173, granted to me on May 16, 1899.

The object of the present invention is to provide a newand improved extension-table arranged to permit of extending the table by one or more auxiliary leaves and securely locking the table in place when extended by one or more of said auxiliary leaves.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A.practical embodiment of my invention is represented in the accompanying drawings, forming a part of this speciii'cation, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a sectional side elevation of the improvement in a closed position. Fig. 2 is a similar View of the same with the auxiliary leavesin place and the table extended to its full capacity, the section being on the line 2 2 in Fig. 3. Fig. 3 is a sectional plan View of the same on the line 3 3 in Fig. 2. Fig. 4 is a transverse section of the same on the line 44 in Fig. 3. Fig. 5 is a longitudinal sectional elevation of the sliding hinge for the auxiliary table-leaves. Fig. 6 is a transverse section `of the same on the line 6 6 in Fig. and Fig. 7 is a sectional side elevation of a modified form of the improvement.

The improved extension-table is provided with two main end sections AA', having tabletops B B', respectively secured on frames C C', carrying legs D D', respectively. The sections A A' are slidabiy connected with each other to permit of drawing the sections apart, as shown in Fig. 2, for extending the table or moving the sections together, as indicated in Fig. 1. For this purpose each side rail C2 of the frame C of the section A is provided with a grooved extension C3, engaged in its groove by a bar C4, projecting longitudinally from the side rail C5 of the frame O' for the other section A'. (See Figs. 3 and 4L.)

On the under sides of the bottoms OG C7 of the frames C C' are secured longitudinallyextending bars E E', respectively engaging grooves F F2, formed in the top of a bar F, carrying a leg F3 for supporting the table at its middle when it is closed or when extended. (See Figs. 1 and 2.)

On the top of the bar F is secured a transverse beam F4, on the top of which is pivoted a catch G, (see Figs. 3 and 4,) adapted to engage a keeper G', secured ou the bottom C6 of the frame C, said catch being provided with an upwardly-extending arm G2, pressed on by a spring for holding the catch normally in engagement with the keeper G' and locking the beam F4, and with it the leg F3, firmly to the frame C of the section A. Vhen the sections A A' are drawn apart, the beam F4, owing to the catch G engaging the keeper G', moves with the section A until the sections are drawn apart about half the distance of the full extension, and at this time a transverse releasing-arm H, projecting from a rail H', attached to the bottom CT of the frame C', engages the arm G2 and swings the same so as to move the catch G out of engagement with the keeper G'. During the remaining half of the extension the beam F4, and with it the leg F3, moves with the frame C' and stands in the middle of the table when it is fully extended, as shown in Fig. 2.

Auxiliary leaves I, J, K, and L are normally arranged under the table-tops B' B, as illustrated in Fig. 1, the leaves I and J being under the top B' and the leaves K and L under the top B. The leaves I and J are rigidly mounted on longitudinally-extending arms I' and J', pivoted to the top surface of the beam F4, one in front of the other,as is plainly illustrated in the drawings. The arms I' and J' are provided at their outer sides with frictionrollers I2 J2, mounted to travel on longitudinally-extending tracks N, formed with inclines N', the tracks being secured to the top of the bottom C7 of the frame C'. The other leaves K and L are likewise provided with arms K' and L', extending longitudinally and pivoted on a slide O, having a limited longitudinal sliding movement on the top of the transverse beam F4. (See Figs. 5 and 6.) The IOO varms K' and L' are also provided on their outer sides with friction-rollers K2 L2, adapted to travel on tracks C2, forming part of the side extension C3, each track C2 having an incline O2 similar to the inclines N on the tracks N.

It is evident that when the table-sections are drawn apart the beam F4 will move with the section A, as previously explained, so that the friction-rollers J2 first come in contact with the inclines N and travel up the same, thus imparting a swinging motion to the arms J to swing the auxiliary table-leaf J into the space between the adjacent inner ends of the table-tops B and B'. On a further movement of the table-sections the friction-rollers I2 will travelup the inclines N' and move the auxiliary leaf I into the space between adjacent edges of the table-top B and the leaf J, already in place. At this time the releasingarm H has released the catch G from the keeper G', so that upon a further outward pull of the sections A A the friction-rollers K2 will travel up the inclines C9 of the tracks C8 to move the section K into the space between adjacent inner edges of the table-top B and the auxiliary leaf J. On a further movement the friction-rollers L2 travel up the inclines C2 to swing the last auxiliary leaf L into the space between adjacent inner edges of the top B and the leaf K, already in position. The adjacent inner edges of the leaves J and K are square, while their outer edges are beveled, and both edges of the leaves I and L are beveled to fit corresponding bevels on the leaves I and K and those of the corresponding sections of the table-tops B and B.

The slide O, previously referred to and forming the fulcrum or pivot for the arms K' and L',isformed with longitudinal slots O',through which extend pins O2, secured in the transverse beam F4 and held on a plate O5, covering the top of the slots O'. lA spring O4 is se. cured at one end to the transverse beam F4 and at its other end to the pivot of the arm K' on the slide O, (see Figs. 5 and 6,) so that the spring O4 normally holds the slide O in the position shown in Figs. 5 and 6. Now when the leaves K and L are in an extended position, as shown inl Fig. 2, and a slight discrepancy exists between thejoints in adjacent section-leaves thenby slightly pushing the table-sections A A toward each other causes the slide O to yield against the tension of the spring O4 to allow of moving the auxiliary leaves closer together to complete the tabletop.

In order to lock the table when in a closed vposition or when either of the leaves or a number thereof are in position to extend the table, I provide the following device: The rail H'which is preferablymade L-shaped or of angle-iron, has its vertical member formed with a ser-ies of spaced notches H2 H3 H4 H5 H5, adapted to be successively engaged by a bolt or pin P, held on the free end of a spring P', secured in the head Q' of a rail Q, attached to the upper side of the bottom C6 of the frame C. A wedge R is mounted to slide in the head Q under the free end of the spring P', so as to impart an upward swinging motiony to the spring P' to lift the pin or bolt ont of register with the corresponding notch H2,

H3, H4, H5, or H6 to allow of moving the tablesections apart or of pushing them together, as the case may be. The pin or bolt P is also adapted to register with a notch Q2 in the head Q', so that when the bolt engages the corresponding registering notch H2, H2, H4, H5, or H6 then the sections cannot be moved apart or pushed together. The wedge R referred to is secured on a rod R', mounted to slide on the rail Q, and extends to the end of the frame C to carry at its outer end a knob R2, adapted to be taken hold of by the operator to push said rod R inward so as to move the wedge R in engagement with the free end of the spring P' to lift the piu or bolt P out of the registering notches to unlock the tablesections and to allow. of drawing the same apart or pushing the same together. A spring R4 is attached at one end to the rail Q and at its other end to the rod R, so as to hold the latter normally in an outermost position, with the wedge R out of engagement with the free end of the spring P. On the rod R is arranged a collar R5, adapted to engage a projection Q3 on the rail Q to limit the ontward movement of the rod R', caused by the spring R4. When the table is closed, the pin or boltP engages the notch H2,and thus locks the said tablein a closed position. When it is desired to extend the table by the leaf J,the operatorpushes the knob R2inward to cause the pin P to disengage the notch I- I2, and then the two sections are drawn apart, as above explained, to cause the leaf J to swing into position,and at this time the pin Psnaps into the notch H5, thus locking the table-sections in place, the leaf J being in an extended position. If the next le'af I is to be extended, the operator has again to press the knob R2 to disengage the bolt P from the notch H2 before the table-sec tions can be drawn farther apart, and when the leaf I is in position at the table-top the bolt P snaps into the notch H4, thus again locking the table-sections in place. In alike manner the pin P engages the notch H5 when the leaf K is in place, and the pin P engages the notch H6 when the leaf L is in place, so that the table is locked when in a closed position or when either of the leaves is in an extended position. v

Instead of using friction-rollers on the arms of the auxiliary leaves I, J, K, and L, I prefer to employ supporting pivoted legs or 1evers L5, normally lying on tracks V. (See dotted lines in Fig. 7.) When the table-sections are dlawn apart, the leg L5 for a particular auxiliary leaf travels along the track and finally comes in contact with a shoulder V', so thatupon a furthermoving apart of the table-sections a swinging motion is given to the arm L4 to move the leaf in position, as

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shown in full lines in Fig. 7. Otherwise the construction is the same as above described.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patentl. An extension-table, comprising two separable connections, arms pivoted to swing in the arc of a circle at the central portion of the table and carrying auxiliary leaves rigid with the table-arms, so as to be capable of moving from an inclined position to a horizontal position, means for moving said leaves into position as the table-sections are moved apart, a locking device for locking the sections in position when the table is closed or extended by one or a plurality of leaves, the said locking device comprising a notched rail secured to one of the table-sections, a bolt for engaging the notches in the rail, a spring carrying said bolt at its free end and secured at the other end to the other table-section, and a spring-pressed rod under the control of the operator and havinga wedge at one end adapted to slide under the free end of the spring to work the said bolt, substantially as shown and described.

2. An extension-table, comprising two separable sections, auxiliary leaves, arms rigidly carrying said leaves, a spring-pressed slide on which the arms are pivoted, to allow the arms to swing in an arc of a circle at the central portion of the table, and to move the said leaves from an inclined position to a horizontal position, the slide being free to move to closely join the leaves and the tops of the table-sections when the latter are slightly pushed toward each other, substantially as shown and described.

3. An extension-table, comprising two separable sections, tracks on said sections, arms pivoted to swing in the arc of a circle at the central portion of the table and carrying auxiliary leaves rigid with said arms, so as to be capable of moving from an inclined position to a horizontal position movable means carried by said arms and adapted to travel on said tracks to raise said auxiliary leaves as the sections are moved apart, and means whereby sundry of said auxiliary leaves, when in the horizontal position have a limited movement, for the purpose set forth.

at. An extension-table provided with sections slidably connected with each other, to permit of drawing the sections apart, arms pivoted to swing in the arc of a circle, and carrying auxiliary leaves rigid with the said arms, levers pivoted on the said arms, stops adapted to engage the free ends of the levers when the sections are drawn apart, to impart a swinging motion to the said arms to move the auxiliary leaves into position between the table-sections, and means whereby sundry of said auxiliary leaves when in position have a limited movement, for the purpose set forth.

5. An extension-table having a slide forming the fulcrum or pivot for the arms with longitudinal slot, provided with a spring to admit of the auxiliary leaves yielding and moving closer together when the edges of the leaves come to the end of the slot in the side of the table-sections.

(5. An extension-table provided with separable sections, arms pivoted to swing in the arc of a circle at the central portion of the table and carrying auxiliary leaves rigid with the said arms, levers pivoted at one end on the said arms, and adapted to im part a swinging motion to the arms to move the auxiliary leaves into position on drawing the sections apart, tracks for the levers to travel on, shoulders at the ends of the tracks for the free ends of the levers to abut on, means whereby the auxiliary leaves when swung into position can be moved to closely join the auxiliary leaves and the tops of the tablesections, and a locking device for locking the table-sections in position, substantially as shown and described.

7. An extension-table comprising two separable sections, auxiliary leaves arms pivoted to swing and carrying said leaves, and a slide having a limited longitudinal sliding movement and on which sundry of said arms are pivoted, for the purpose set forth.

8. An extension-table provided with separable connections,table-arms pivoted to swing in the arc of a circle at the central portion of the table and carrying auxiliary leaves rigid with the table-arms, a slide forming the fulcrum or pivot for the arms, the said slide being spring-pressed and having longitudinal slots, and pins extending through said slots, whereby the slide has a limited longitudinal sliding movement, for the purpose set forth.

9. An extension-table, comprising two separa-ble sections, arms pivoted to swing in the arc of a circle and carrying auxiliary leaves rigid with the table-arms, means for moving said auxiliary leaves into position as the tablesections are moved apart, and a locking device for locking the sections in position, the said locking device comprising a notched rail secured to one of the table-sections, a spring secured to the other table-section and carrying a pin or bolt at its free end for normally engaging the notches in the rail, a springpressed rod having a head for moving the spring to disengage the pin or bolt, and. means for limiting the outward movement of the rod, substantially as described.

JOHN THOMAS LA TURNO.

Vitnesses:

PETER B. HELD, SIM LANE, J r.

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