US805618A - Inkstand. - Google Patents

Description

PATENTED NOV. 28, 1905. F. M. ASHLEY. INKSTAND. APPLICATION FILED MAE.22, 1905.

7. WEE Qz 0 I r Ill i l y zw UNITED STATES PATENT OFFICE.

INKSTAND.

Specification of Letters Patent.

Patented Nov. 28, 1905.

Ap licatio filed March 22, 1905. Serial No. 251,394;-

To 41% whom it may concern.-

Be it known that I, FRANK M. ASHLEY, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Inkstands, of which the fol lowing is a specification.

My invention relates to inkstands, and particularly to that class in which a diaphragm of soft rubber is 'used to force the ink to the dip-tube by the depression of the same.

The object of the invention is to devise a more perfect stand of this character than has heretofore been made, and particularly to make a cover for the said soft-rubber diaphragm which will fit with the rubber in such a manner that it will not be loose on the stand and at the same time will insure a tight joint between the rubber diaphragm and the top of the reservoir.

Referring to the drawings which form part of this specification, and in which similar letters of reference indicate corresponding parts, Figure 1 is a vertical sectional View of the said inkstand in its normal working condition. Fig. 2 indicates the bottom of the cover for the rubber diaphragm.

Referring to Fig. l, A indicates the body of the stand; B, the reservoir therein. C indicates the soft-rubber diaphragm. D indicates the cover-and holding means for said diaphragm, and E is the dip-tube.

The diaphragm O fits into the top of the body of the stand air-tight at C.

The cover D is formed with an annular groove on its under side, as shown at D, into which the top or flanged part of the diaphragm C fits snugly. The inner diameter of the cover D has a depending portion constituting a ring D which fits the rubber diaphragm, as shown at D and presses the rubber tightly against the inner edge of the stand at A, and thus insures a tight joint and at the same time holds the cover D firmly to the stand, so

that should the stand be inverted the cover D- would not drop off. This avoids the rattle heretofore common to this stand and increases its utility in a marked degree.

Thedescribed relation between thevcover, the diaphragm, and the top of the body portion of the stand admits of the cover being removed when desired without involving the removal of the diaphragm-flange from said body portion. This feature will be advantageous in replenishing the supply of ink; but in the form of the invention disclosed in the drawings the removal of the top for the purpose stated Will require the Withdrawal of the dip-tube on account of the extended diameter of the dip at the upper end of said tube. When the dip-tube and top have been so removed, the diaphragm is depressed to'present an adequate medium for the introduction of the ink and escape of air through its central opening.

The dip-tube E is supported by the diaphragm C in the usual manner, as shown at E; but in order to insure a tight joint between the diaphragm C and dip-tube at E the diameter of the tube at E is made somewhat larger than heretofore, and this increase in diameter relative to the opening through the diaphragm forces the rubber diaphragm into the depressed concavo-convex portion, as

shown at F, and this also serves to give to the rubber or depression of the same a nice action and assists in the permanency of its form under the Weight of the dip-tube.

It will be appreciated that by holding the diaphragm against the body of the stand and establishing and maintaining the central depressed portion F by means of the special frictional engagement of the dip-tube, due to the normally smaller diameter of the central opening within the diaphragm, the proper confinement of air within the reservoir is promoted, while a satisfactory range of lifting movement is permitted for the dip-tube without liability of disturbing the position of the diaphragm, said upward movement of the tube having the obvious eifect of augmenting the air-tight joint between the central depressed portion and the tube.

The depression in the bottom of this stand at G allows practically all the ink to be forced from the reservoir in using the same.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an inkstand, a body portion containing a reservoir, a rubber diaphragm held at the top thereof and having acentral opening, and a dip-tu be having a part of larger diameter than the normal diameter of the diaphragm-opening, the relative difference in diameters of said tubeand opening resulting in a central depressed portion of the diaphragm.

2. In an inkstand, a body portion containing a reservoir, a rubber diaphragm held at the top thereof and having a central opening, a cover cooperating with said diaphragm, and a dip-tube having apart of larger diameter than the normal diameter of said diaphragmopening, said tube part being frictionally engaged within said diaphragm opening and thereby establishing a central depressed portion of the diaphragm.

3. In an inkstand, a'body portion containing a reservoir, a rubber diaphragm provided with a flange resting on the top of said body portion, said diaphragm also havingacentral opening, a cover cooperating with said dia-' phragm-flange, and a dip-tubehaving a part of larger diameter than the normal diameter of said diaphragm-opening, said tube part being frictionally engaged within said diaphragm-opening and thereby establishing a central depressed portion of the diaphragm.

4:. In an inkstand, a body portion containing a reservoir, a rubber diaphragm fitted in the top thereof, and provided with a flange resting on the top of said body porti0n, a cover for said diaphragm provided with an annular groove within which the said flange is frictionally engaged, said cover normally being freely supported in position relative to said body portion and removable without removing the said flange from the body portion.

5. In an inkstand, a body portion containing a reservoir, a rubber diaphragm fitted in the top thereof and provided with a flange resting on the top of said body portion, a cover for said diaphragm provided with an annular groove into which said flange fits, said cover having a depending-ring portion fitting the inside walls of said diaphragm and pressing the same against said body portion, said cover being removable from the body portion without necessitating the removal of said diaphragm, and a dip-tube supported by said diaphragm.

6. In an inkstand, a body portion containing a reservoir with a central depression in the bottom thereof, a rubber diaphragm fitted in the top of said body portion and provided with a flange resting on the top of said body portion, a cover for said diaphragm provided with an annular groove within which said flange is frictionally engaged, said cover normally being freely supported in position relative to said body portion and removable without removing the said flange from the body portion, and a dip-tu be the lower end of which depends within the central depression of the body portion of the stand.

In testimony whereofIhave signed my name to this specification in the presence of two subscribing witnesses.

FRANK M. ASHLEY.

Witnesses:

PHILIP K. STERN, WM. PAXTON.

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