US40841A - Lemuel p - Google Patents

Description

UNITED STATES ATENE OFFICE,

LEMUEL P. JENKS, OF BOSTON, MASSACHUSETTS, ASSIGNOR 'IO LEVI L. TOIVER, OF SAME PLACE.

INKSTAND.

Specification forming part of Letters Patent No. 10,Sll, dated Dccmeber S, 1863.

To ctZZ whom t may concern:

Be it known that I, LEMUEL I. JENKs, of Boston, county of Suffolk, and State of Massachusetts, have invented a new and Improved Vessel for the Oontainin g and Delivering of Inks; a-nd I do hereby declare that the following is a full and exact description of my invention.

The nature of my invention' consists in so arranging and constructing an inkstand that the smallest area possible may be exposed to evaporation, while it at the same time delivers the ink copiously to the pen when in use, and admits of ready adjustment to allow'the ink to subside when expelled by expansion of the air when the contrivance is in a heated room.

In the drawings annexed, Figure l represents a top view; Fig. 2, a side view, and Fig. 3 a vertical section View.

A A A A, Fig. 3, represent an obtuse hollowfrustum of a cone with the hollow side uppermost, thus forming a basin, bordered at b b by a flat ring. At the smaller end of this basin is a smaller, hollow, rounded frustum of a cone, C C, (forming a tunnel,) and at its lower end a hollow cylinder, d d, the area of whose aperture is one-eighth inch in diameter. Beneath the ring b b is another ring, c e, with an exterior groove, t', running round its periph` ery. The whole of the above, forming the upper reservoir, is formed in one piece and is made (preferably) of glass, though it can be made of hardened or other rubber, wood or other material.

F F, Fig. 3, is a hollow vessel, round in top view, (preferablyofglass,) with its sides rounded (in section) so as to present (in section) the general appearance of a hollow, rounded frustum of a cone, with its base solid and its top open. This is the ink-containing vessel or lower reservoir. Its top is made sutliciently high so as that when the arrangement is put together the said top reaches about half an inch (more or less) above the top of the second cone, c c. Three-quarters of an inch (more or less) below (outside) the top of the vessel F F is a groove, m, round its periphery.

G G represent an elastic band, of indiarubber, of thickness enough to make it moderately stiff, with a bead at its upper and lower portion, inside, which two beads it respectively into the groove round the outer side of the ring e e, above, and the groove round the outer side ofthe vessel F F, below.

The operation of the contrivance is this: The india-rubber ring or band G G, being put in its place, connects the vessel F F and the top portion, A A A A, supporting the latter portion (the upper reservoir) above the former, (the lower reservoir.) The india-rubber ring G G, performing the functions of a valve, being pushed with the linger at its lower side away from the side of the vessel F F, allowing the contained air to escape, the ink is poured into the aperture of A A A A till it partially fills the vessel F F, and reaches halfway to the upper part of the cylinder d d. When the ink is wanted,the hand is lightly placed on the ring b b, and is gently pressed, diminishing the area of the containing-vessel, and the ink rises up (according to the amount of pressure) into the funnel c c, and the pen, bein g dipped therein,is supplied with ink, when the pressure is removed and the ink falls back into thereservoir F F, presenting for evaporation a circular area of only oneeighth of an inch in diameter. Should the reservoir F F be filled in a high temperature-say 800 Fahrenheit-and then taken into a cold place, a slight additional pressure of the hand gives the necessary diminution of its containing area to force the ink to a proper level. Should the reservoir F F be filled at a low temperature-say320 Fahrenheit-and then be subsequently carried into a heated place, the expansion of the air inside the inkstand, expelling the ink, carries the ink-supply to a'point below the top of the upper reservoir, A A A A, and the india-rubber ring G, being pressed for an instant upward, away from the vessel F F, the ink immediately sinks back into the reservoir FF, and no loss of ink results; and the upper portion can be made of compressible rubber, shrinking upon the lower reservoir, F F, thus dispensing with the compressible r1ng.

I do not claim an inkstand with an aperture covered with elastic substance to secure the advantage by compression of the rising and falling of the ink, nor do I claim an inkstand made of all compressible substance, voir F und the dipping-cup c, us and for the With no valve for the equalization of the zLtpurposes shown. mospheric pressure; but

What I claim herein as of my own invention, LEM UEL P' JENKS and desire to secure by Letters Patent, is lVitnesses:

In the construction of nkstands, the com- A. KINGSBURY, binution of the elastic ring G with the reser- A. O. ALLEN.

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