US1390547A - Damper for moistening adhesive cements and the like - Google Patents

Description

H- B. AND M. G. ROGERS- v DAMPER FOR MIOISTENING ADHESIVE CEMEN'TS AND THE LIKE.

APPLICATION FILED FEB- 8, I921.

Patented Sept- 13, 1921.

FIG.

[/1 van fors UNITED STATES PATENT OFFICE.

HARRY BOTWRIGHT ROGERS AND MAURICE GOAD ROGERS, OF LONDON, ENGLAND.

DAMPER FOR MOISTENING ADHESIVE CEMENTS ANT) TI-IE LIKE.

Specification of Letters Patent. Patented Sept. 13, 192 1.

lipplication filed February 8,1921. Serial No. 443,405.

To all whom it may concern:

Be it known that we, HARRY BOTWRIGHT Rooms and MAURICE GoAD ROGERS, both of London, England, subjects of the King of England, have invented certain new and use ful Improvements in Dampers for Moistening Adhesive Cements and the like, of which the following is a specification.

This invention relates to a class of dampers for moistening adhesive cements or spreading a film of water or other liquid over a surface, as for example for moistening gum on envelops', the class of damper referred to being that in which the damper consists of a chamber to contain the water or liquid with a slot or other suitably shaped opening in which is fixed a pad of felt or other suitable material which fills up the slot or opening and on all sides is made to adhere by a cement or otherwise, to the walls of the chamber.

In this class of damper the pad has been fixed in the opening so that the water or liquid in the chamber is in direct contact with the pad and percolates through the same without let or hindrance, and difficulty has been experienced in preventing the water from passing through the pad too fast. Further there is difficulty in preventing the liquid from escaping down the sides of the pad forcing a passage between it and the cement by which it is fastened to the walls ofthe chamber. This invention has for its object to overcome these difliculties.

We make a damper as follows ;--reference being had to the accompanying drawings in which Figure 1 is a side elevation and Fig. is a vertical section at right angles to lWe construct a suitably shaped and sized chamber a of india rubber or other suitable resilient material preferably in the form of a tube about four to six inches long which can be held in the hand, the top end being open and furnished with an air-tight stopper 6, preferably of india rubber, and the other end for a certain length of the tube being gradually flattened as at a so as to form at its extreme end a rectangular or approximately rectangular orifice. We cut a pad of felt 0 approximately square and of such a size that when inserted in the rectangular orifice it fills the same. This pad 0 when treated as hereinafter described is inserted for about one-half of its extent in the orifice the other .half or a brush. I i

We coat the upper half or part of the felt intended to be located inside the chamber with a rubber solution, covering not only the two sides and two edges which will be in contact with the walls of the chamber but also the edge which will be presented to the water or liquid in the chamber. coating is so applied as to make the half or part of the pad which is within the chamber absolutely waterproof on its surface.

By means of'a rubber solution the two sides and two edges of the pad which are in contact with the walls of the chamber are joined and hermetically sealed to the walls of the chamber.

We make a very small puncture or hole 0 1n the coating on the upper edge of the pad 0 which is presented to the water or liquid in the chamber and in order to preventthe puncture or hole from sealing itself up again We cause a few fibers or threads of the felt to protrude through the puncture or hole.

This can be effected by piercing the coating with a very fine instrument which has a small hook or other formation to seize and pull a few fibers or threads through the hole when the instrument is withdrawn.

What we claim as our invention and desire to secure by Letters Patent of the United States is 1. A damper comprising a chamber adaptpart protruding to act as ed to contain liquid, and having an opening and an absorbent pad filling said opening and protruding from an end of the chamber, that part ofthe pad within the chamber having applied thereto a liquid proof coating andthe sides thereof caused to adhere to the sides of the body of the damper to prevent the passage of water through the opening and a small puncture being provided in the liquid proof coating in the edge of the pad presented to the liquid within the chamber.

2. A damper comprising a chamber adapted to contain liquid, and having an opening, an absorbent pad filling said opening and protruding from an end of the chamber, that part of the pad withinthe chamber having applied thereto a liquid proof coating and the sides thereof caused to adhere to the sides of the body of the damper to prevent the passage of water through the opening, and a small puncture being provided in the This I liquid proof coating in the edge of the pad presented to the liquid Within the chamber, with means to prevent the puncture from becoming sealed.

3. A damper comprising a chamber adapted to contain liquid, and having an opening, an absorbent pad filling said opening and protruding from an end of the chamber, that part of the pad Within the chamber having applied thereto a liquid proof ooating and the sides thereof caused to adhere to the sides of the body of the damper to prevent the passage of Water through the opening, and a small puncture being pr0- vided in the liquid proof coating in the edge of the pad presented to the liquid With in the chamber, With means to prevent the puncture from becoming sealed, said means being constituted by a few fibers of the pad protruding through said puncture.

In witness whereof We have signed this specification in the presence of tWo Witnesses.

HARRY BOTWRIGHT ROGERS. MAURICE GOAD ROGERS. Witnesses JOHN C. ERWIN, REGINALD J. RIDGWELL.

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