US1043567A

US1043567A - Table.

Info

Publication number: US1043567A
Application number: US63689011A
Authority: US
Inventors: Clarence S Burnham
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-07-05
Filing date: 1911-07-05
Publication date: 1912-11-05
Anticipated expiration: 1929-11-05

Description

.0. S. BURNHAM.

TABLE.

APPLICATION FILED JULY 5, 1911. Q I 1,043,567. ed NOV. 5, 1912.

2 SHEETS-SHEET l.

by I

Attorneys G. S. BURNHAM.

. TABLE.

APPLIOATION FILED JULY 5, 1911.

. 1 043 5 7 Patented NOV. 5, 1912.

2 SHEETSSHEBT 2.

54 Q '75 LB I Z x 5 a A: fllmmzlnventor I 7 I o Attorneys CLARENCE S. BURNHAM, OF CANISTEO, NEW YORK.

TABLE.

Specification of Letters Patent.

Patented Nov. 5, 1912.

Application filed July 5, 1911. Serial No. 636,890.

To all whom it may concern:

Be it known that I, CLARENCE S. Bonn- HAM, a citizen of the United States, res1ding at Canisteo, in the county of Steuben and State of New York, have invented a new and useful Table, of which the following is a specification.

It is the object of this invention to provide a table having a rotatable top, provided with foldable leaves, the construction being such that when the table top is rotated, the leaves may be folded downwardly and inwardly, means being pro-} vided for locking the leaves in their folded positions.

A further object of the invention is to provide novel means for assembling the table top, for rotation, with the pedestal of the table.

A further object of the invention is to provide a table having a pedestal into which the leaves of the table may readily be folded means being provided for locking the leaves in their folded positions.

A further object of the invention is to improve, generally, devices of the type to which the present invention appertains.

lVith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter de-:

scribed and claimed, it being understood that changes in the precise embodiment of invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings, Figure 1 shows the invention in side elevation, the leaves of the table being folded inwardly,

into engagement with a pedestal; Fig. Qis' a section upon the line C-D of Fig. 1, parts being omitted for the sake of clearness, the view illustrating the parts in the the connecting elements which are united with the leaves, are assembled with the rotatable member; and Fig. 6 is a fragmental plan of the rotatable member which connects the leaves for simultaneous lifting and lowering, the view depicting the mechanism whereby the rotatable member is held against movement, thereby to prevent a falling of the leaves.

In carrying out the invention there is provided a base .1 of any desired form, supporting a platform 2, fixed to and rising from which, is a pedestal 3. The pedestal 3 preferably consists of four intersecting wings 4, fashioned at their upper ends with outwardly protruding extensions 5, the upper edges of the extensions 5 being cut away, as denoted by the numeral 6.

The invention further includes a pair of intersecting bars 7, located above the wings 4 and in vertical alinement therewith, the bars 7 being terminally secured to the upper edges of the wings 4. The outer ends of the bars 7 are beveled, or undercut, as shown at 8, this feature appearingmost clearly in Fig. 4. The lower ,end of a shaft 9, seen most clearly in Fig. 4, is mounted in wings 4, at their point of intersection, the upper end of the shaft 9 being secured in the bars 7, as shown at 10in Fig. 4.

The invention further includes a top 11 preferably of rectangular contour. To the lower face of the top 11 are secured a series of stop-blocks 12. To the stop-blocks 12 is secured a segmental retaining member 14, located beneath the intersecting bars 7. The relation between the retaining member 14 and the bars 7 is such that the top 11 will be held upon the pedestal 3, for rotation, through the instrumentality-of the elements 7 and 14, the retaining member 14 being rounded at its periphery, so as to move in close proximity to the inner edges of the wings 4 of the pedestal 3, as shown in Fig. 4. To the under side of the top 11, about its periphery, cleats 15 are secured, the inner edges of which are beveled or undercut, as shown at 16, to cotiperate, in a manner to be described hereinafter with the corresponding edges 8 of the bars 7; this detail appearing most clearly in Fig. 4.

The invention further includes a series of leaves 17, the leaves 17 being preferably triangular, and being hingedly secured to the edges of the top 11, the construction being such that when the leaves 17 are folded upwardly, the superficial area at the top of the table will be doubled, the rectangular contour of the top, preferably, although not necessarily, being retained. The leaves 17 are provided along their inner edges, and

member 20, preferably circular in contour,

and journaled for rotation upon the shaft 9, below the retaining member 141, a washer 21 being interposed between the members and 1 1, as shown in Fig. 4c. The rotatable member 20 is supported by a series of blocks 22, upheld by a closely compressed, strong, compression spring 23, surrounding the shaft 9 and hearing at its upper end agamst one of the blocks 22, the lower end of the spring 23 bearing against the wings 3, at their point of intersection, as seen most clearly in Fig. 41.. The function of the spring 23, obviously, is to prevent lost motion between the fixed and rotatable portions of the table.

Secured to the lower surface of the rotatable member 20, are a series of pivot elements 2 1, with which the inner ends of operating rods 25 are pivotally assembled. The operating rods 25 consist of arms 26, the extremities of which. are bent outwardly, to

form fingers 27, adapted to register in cars 28 depending from the pivot members 241.. Adjacent their outer ends, the arms 26 0f the operating rods 25 are twisted, as shown at 29, to form eyes 30, engaged with eyes 31, mounted in blocks 32, secured to the under faces of the leaves 17 Braces 33 engage at one end with the bloc {S 32, the outer ends of the braces 33 being engaged in the angles formed by the intersection of the cleats 18 of the leaves 17 and the peripheral, depending rims 3-1 of the leaves, Fig. 3 showing this-detail most clearly.

A means is provided for preventing a rotation of the member 20 upon the shaft 9. This means includes a spring pawl 35, secured to one of the wings 4, the pawl 35 being adapted to engage with a metal faced notch 36, or like projection, formed in the periphery of the member 20. In order to break the engagement between the pawl 35 and the notch 36, an operating rod 37 is j ournaled in the pawl 35, and in one of the wings 1, adjacent its outer end, the operating rod 37 having at its outer end a suitable hand-hold 38, and at its inner end, a cam head 39, adapted to bear against the inner face of the pawl 35.

The operation of the structure is as f0llows. As shown in Fig. 1, the leaves 17 may be folded downwardly and inwardly, until their. outer angles 40 register in the angles 41 formed by the wings 4 of the pedestal 3, the leaves 17 slanting inwardly, in inclined relation. The spring pawl 35,

under such circumstances, will be engaged with the notch 36 in the member 20, and thus the member 20 will be prevented from rotating. The operating rods 25 will be maintained in the positions shown in Fig. 2, and thus the leaves 17 will be locked. in depending, inwardly slanting positions. Under such circumstances, the wings +1; will extend to the angles of the top 11, as must be necessary, in order that the leaves 17 may move between the wings 4. W hen it is desired to open the leaves 17 into the horizontally disposed positions shown in Fig. 3, the hand-hold 38 is engaged, rotating the rod 37, the cam head 39 of which, engaging the inner face of the spring pawl 35, will retract the pawl 35 out of engagement with the notch 36 in the member 20. One of the leaves 17 is then seized, and swung upwardly. This upward swinging of the one leaf, will, through the instrumentalit-y of the operating rods 25, cause a rotation of the member 20 upon the shaft 9, and a consequent simultaneous lifting of all of the leaves 17. The leaves 17 are thus shown in dotted line in Fig. 3. In order to hold the leaves .17 in their elevated positions, the top 11 and the leaves 17 are rotated, until the leaves 17 lie above the extensions 5 of the wings 4, as clearly shown in dotted lines in Fig. 3. Thus, the leaves 17 will be upheld, in alinement with the top 11. When the top 11 is rotated in the manner hereinbefore described, the beveled outer ends 8 of the bars 7 will interlock with thebeveled faces 16 of the cleats 15, and since the cleats 15 are tangential to a circle described by the outer ends of the bars 17, it will be seen that the top 11 of the table will be wedged upon the pedestal 3, against rotation. In order to lower the leaves 17, the top 11 of the table is rotated until the extensions 5 are alined with the angles of the top, whereupon the leaves 17 may be swung downwardly and inwardly, rotating the member 20 until the pawl 35,engaging the notch 36, locks the member 20 against rotation, thereby to hold the leaves 17 as shown in Fig. 1. It is to be noted that when the top 11 is rotated to permit a folding of the leaves 17, the stop-blocks 12 engage with the bars 7, and thus aline the extensions 5 of the wings, with the angles of the top 11, thereby permitting a folding of the leaves 17.

Having thus described the invention, what is claimed is 1. In a device of the class described, a pedestal; a top j ournaled upon the pedestal; leaves hinged to the top and supported upon the pedestal, the rotation of the top permitting the leaves to fold into the pedestal; a member supported for rotation upon the pedestal below the top; connections pivoted to the leaves and pivoted to the rot-atable member for movement transversely of the plane of the rotation of the rotatable member; and a locking device upon the pedestal engaging said member to hold the same against rotation and to hold the leaves fixed with respect to the top.

2. In a device of the class described, a pedestal including a fixed member; a shaft mounted in the pedestal and in the fixed member; a top located above the fixed member and held by the shaft; a rotatable member journaled upon the shaft below the fixed member; a spring interposed between the pedestal and the rotatable member and adapted to thrust the rotatable member against the fixed member; leaves hinged to the top and supported upon the pedestal, the rotation of the top permitting the leaves to fold on the pedestal; connections pivoted to the leaves, the connections being pivoted to the rotatable member for movement trans versely of the plane of rotation of the rotatable member.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

CLARENCE S. BURNHAM.

Witnesses:

J. A. ALMY, L. J. SIMPSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, 11.0.