US141887A

US141887A - Improvement in table-leaf supports

Info

Publication number: US141887A
Authority: US
Publication date: 1873-08-19
Anticipated expiration: 1890-08-19

Description

E. W. PERBIN.

Table-Leaf Supports.

Patented August 19, 1873.

No.jl41,887.

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EDWIN W. PERRIN, OF PORTLAND, OREGON, ASSIGNOR OF ONE-HALF HIS RIGHT TO W. ED. WELDON, OF SOLANO COUNTY, CALIFORNIA.

IMPROVEMENT IN TABLE-LEAF SUPPORTS.

Specification forming part of Letters Patent No. 141,887, dated August 19, 1873; application filed December 16, 1872.

To all whom it may concern:

Be it known that I, EDWIN W. PERRIN, of Portland, in the county of Multnomah and State of Oregon, have invented a new and Im-' proved Method-of Supporting Table-Leaves; and I do hereby declare that the following is a full and exact description of the same.

The nature of my invention consists in supporting table-leaves when fully opened or set at any angle for writingdesk purposes by means of levers and gearing.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

Figure 1 is detailed elevation of gear and pawl. Fig. 2 is section of guide. Fig. 3 is plan of under-side table. Fig. etis an end elevation.

E E are rods fastened to the side of table casing, under the leaf, and having a hearing at each end. A A is a segmentwith teeth. 'D is a pawl. O is a spring fastened to pawl-plate. F F are levers. G Gare groove-guides. H H are cross-heads.

I will now proceed to describe the manner of its working: Ifasten to the under side of the table-leaves, and in the center, the guides G G, and insert the cross-heads H H, and attach thereto the levers F F. One end of the lever is pivoted through the cross-heads H H,and the other end slips over the rods E E and is keyed thereto. On the end of rods E E are attached the geared segments A A. On the end casing of the table is fastened the pawlplate' and spring D and C. To illustrate: Suppose the leaf to be down and we wish to raise it to any desired angle, or full, for table use; by raising on the leaf the geared wheel is turned and the pawl D is ratcheted from one tooth to another. At the same time that the movement commences the cross-heads H Hare moved through the guides G G the proper length for its firm support. The pawl D keeps the leaf from closing. To close the leaf the pawl D is raised by pressing on the ball of the pawl, throwing it out of gear, and the leaf can then be closed.

What I claim as my invention is- The pawls D, the gears A, the rods E, and levers F, together with the cross-heads H and grooved guides Gr, so attached and arranged as to act as supports to table-leaves.

- EDWIN W. PERRIN.

Witnesses:

W. G. GILBERT, T. KRUMBEIN.