US35478A

US35478A - Improvement in inkstands

Info

Publication number: US35478A
Authority: US
Publication date: 1862-06-03
Anticipated expiration: 1879-06-03

Description

UNITED STATES PATENT OFFICE.

IMPROVEMENT IN INKSTANDS.

Specification forming part of Letters Patent No. 35,478, dated June 3, 1862.

To all whom it may concern:

Beit known that I, SAMUEL SLocoMB, a citizen of the United States of America, and a resident of East Cambridge, in the county 0f Middlesex and State of Massachusetts, have invented a new and useful Improvement in' Inkstands; and I do hereby declare the same to be fully` described in the following specilication and represented in the accompanying drawing, which exhibits a vertical and transverse section of an inkstand constructed in accordance with myinvention.l

My improvement has reference to what is termed the well inkstand, which is usually `made of glass and constructed with a cylin drical well or cavity in its bottom, into which -well or cavity a tubular vpiston extending down from a cup extends.

In the drawing, A denotes theink-reservoir of such an inkstand, while Bis the well, C the tubular piston, and D the ink-cup.

rIhe nature of my improvement consists,

. principally, in providing the inkstand with an annular air-tight or ground joint arranged on the top of its mouth and on the under side of the supporting-flange of the ink-cup-that is to say, I make a ground airtight joint between the top surface, c, of the neck of the mouth c and the bottom surface, b, of the' ange d. The external surface of the cup D I form tapering or conical, as shown in the drawing, or so as not to touch the inner surface ofthe mouth c except at its extreme top. Thus I form no ground joint between the inner surface of the neck c and the contiguous outer surface of the cup, but arrange the ground joint directly underneath the flange and on the top of the neck. .By so doing, and by making between the neck and the cup an annular space, c, of such a width as will prevent any accumulation of ink therein from drying and cementing the cup to the neck, I completely avoid the difficulty so often experienced of the ink-cup becoming set or fixed in the neck by dried ink.

The ground joint or its equivalent is essential in order to maintain the ink at a higher level in the cup than it is in the reservoir.

I lay no claim to the employment in the well-piston and cup inkstand of a device by which the ink in the cup may be kept at a level higher than that of the ink in the body or reservoir of the inkstand; but

I claim- The improved piston and well inkstand as made with the ground or air-tight joint arranged on the top of the neck of the inkres ervoir and on the bottom of the liange of the ink-cup and with the annular space between the neck andthe cup, as set forth.

S. SLOCOMB. Witnesses:

R. H. EDDY, F. P. HALE, Jr.